Santragachi Lake near Kolkata is heavily polluted, as are many waterways in India.

India this week published the draft of a Green Credit Programme aimed at incentivising environmentally conscious practices to promote a sustainable lifestyle as part of the broader Indian initiative, Lifestyle for Environment (LiFE)

The new Green Credit Programme aims to lay the foundation for a market-based mechanism to promote “a grassroot mass movement for combating climate change, enhancing environment actions to propagate a healthy and sustainable way of living based on traditions and values of conservation and moderation, and for sustainable and  environment-friendly development.” 

The official Gazette notification from the Ministry of Environment and Forests was published on Tuesday, five months after the plan was announced in Parliament.

However, climate and environmental activists have generally taken a “wait-and-see” attitude to the initiative, saying it would be difficult to assess until the value of the credits is established – along with a mechanism for awarding them efficiently and with integrity. 

Key areas overlooked

The Green Credits Programme will be implemented through pilots in eight sectors, primarily affecting rural areas. These, according to the text of the government gazette, will include: 

  • tree planting; 
  • water conservation, water harvesting and water use efficiency, including treatment and reuse of wastewater; 
  • regenerative agricultural practices and land restoration to improve productivity, soil health and nutritional value of food produced; 
  • sustainable and improved practices for waste management, including collection, segregation and treatment;  
  • conservation and restoration of mangroves; 
  • measures for reducing air pollution and other pollution abatement activities; 
  • construction of buildings and other infrastructure using sustainable technologies and materials.

But electricity production and transport – two of the biggest sources of pollution in India – are not mentioned at all.  

The initiative does, however, make reference to credits for “measures for reducing air pollution and other pollution abatement activities.”

India currently suffers from some of the highest air pollution levels in the world – with peaks regularly recorded in late autumn when rural crop waste burning by farmers, a spike in household heating, and weather conditions all combine to make the Delhi region, in particular, an air pollution sinkhole. 

So far the central government has failed to make serious efforts to incentivize alternatives to crop stubble burning, one of the leading drivers of seasonal air pollution emergencies.  

Punja, India – Crop burning reduces crop yield and worsens air pollution

Budget allocation unclear

The government first proposed the Green Credit initiative on 1 February as part of its 2023-2024 budget, describing it as a national voluntary market mechanism. 

Although funds weren’t allocated explicitly for this, any administrative costs for this initiative are likely to come from the increased budget allocation for the Ministry of Environment, Forest and Climate Change, which went up from a revised estimate of Rs 2,478 crore ($301million) in the last budget to Rs 3,079.4 crore ($375 million) this year. 

Alternatively, funds could come from the Rs 35,000 crore allocated to achieve energy transition and net zero emissions.

By leveraging a “competitive market-based approach for Green Credits,” the government said it aims to motivate individuals, private sector producers, farmers, small-scale industries, cooperatives, urban and rural local bodies, forestry enterprises and any organisations that generate positive environmental actions by “ incentivising voluntary environmental actions of various stakeholders”. 

Green credits will be tradable and those earning them will be able to sell these on a proposed domestic market platform.  However, the mechanisms for assigning value to credits, awarding credit and enabling their transfer have yet to be created. 

Bureaucratic structure

The initiative will be managed by a steering committee headed by the environment secretary and comprise officials across the ministries and departments concerned. 

To administer such an ambitious programme, the government envisages an Accredited Green Credit Verifier, an entity accredited and authorised by the Green Credit Programme Administrator to monitor and assess activities under the umbrella of India’s  Environment Protection Act. 

Entities will have to register to qualify to generate Green Credits through an electronic database system maintained by the Green Credit Programme Administrator or its accredited agency to record the issuance and exchange of Green Credits.

The government has appointed the Indian Council of Forestry Research and Education as the programme administrator responsible for implementing the Green Credit Programme including its management, monitoring and operation. 

The administrator will develop all guidelines, processes and procedures for implementation of the programme, constitute technical or sectoral committees for each activity to facilitate in developing methodologies and processes for registration of Green Credit activities and issuance of Green  Credits and help set up a credible trading platform and generate demand for such credits.

According to the draft policy, anyone engaged in positive environmental interventions can earn Green Credits. For example, a company which undertakes water harvesting and reuse or invests in restoring mangrove forests in a state can earn Green Credits, which can subsequently be sold at the trading platform once a steering committee has validated them. 

Each Green Credit would have a monetary value assigned to it and can be traded, but there is no indication of how the different activities will be weighed. In addition, there is a danger of too much bureaucracy.

Industry associations will be included in the steering committee that governs the implementation of the Green Credit policy – meaning that pressures from polluting industries could overwhelm the programme.

The various parties mentioned by the notice –a steering committee of officials from different ministries, accredited Green Credit verifiers, third-party certifiers and many other committees –  could have very different views on environmental issues. It would complicate its implementation

“It’s a work-in-progress, well-intentioned, using all the correct words, but without financial details,” said a Delhi-based scientist who spoke with Health Policy Watch, but declined to be named. “It appears quite subjective. Let us see how this policy comes up. Its actual impact will depend on many factors.”

A polluted water canal in India

Incentivising farmers

The emphasis on farmland and forests could, however, be at least an entry point to incentivising farmers to adopt alternatives to crop stubble burning – which creates devastating pollution in northern India every autumn. 

Conversely, however, there isn’t much emphasis at all on fostering alternatives to the other two leading drivers of air pollution and climate change – through clean power production and green mobility. In addition, it could be used by dirty industries to greenwash their environmentally unsound projects.

However, it is still early days to evaluate this policy. The draft policy will be finalised in two months’ time after comments and objections are received and reviewed.

Following that, the Ministry of Environment and Forests is supposed to begin to establish mechanisms for implementation, including technical committees for each sector to develop methodologies, standards and processes for registration of projects granting the credits. 

The technical committees will also determine the value of green credit to be awarded and more detailed eligibility criteria. 

The Indian Council of Forestry Research and Education (ICFRE) will also accredit a provider who will set up the trading platform for the exchange of Green Credit Certificates,  as well as decide what entities can act as green credit verifiers. 

An environmental activity generating Green Credits may also generate climate co-benefits, the government noted. Therefore, many activities eligible for Green Credits may also be eligible for Carbon Credits, under a carbon credit trading scheme that is currently being developed by the Bureau of Energy Efficiency in the Ministry of Power, along with Ministry of Environment, Forests and Climate Change.

Jyoti Pande Lavakare is co-founder of the Indian clean air non-profit Care for Air. Her memoir, Breathing Here is Injurious to Your Health on the human cost of air pollution simplifies and amplifies the science behind air pollution.

Image Credits: Biswarup Ganguly, Neil Palmer, MacKay Savage.

The World Health Organization (WHO) estimates that some 99% of the world’s population lives where the WHO air quality guidelines are not met.

Air pollution poses one of the most significant environmental risks to health in the modern world, and in the latest episode of the “Global Health Matters” podcast, host Garry Aslanyan speaks with two grassroots advocates about their experiences in dealing with the impact of air pollution on their communities.

“We have poor black communities that were never intended and were never allowed to reach any other potential other than unskilled or low-skilled workers,” Rico Euripidou, Campaign Coordinator for GroundWork, an environmental justice NGO working primarily in southern Africa, said. Referencing what he sees in poorer South African communities, Euripidou stated, “These people bear a disproportionate burden from the environmental determinants of health. They have higher levels of air pollution.”

Speaking of her own experiences working in Indian communities, Shweta Narayan, Global Climate & Health Campaigner of Health Care Without Harm, told Aslanyan that “fence-line communities in India are also in a similar position. They are economically, socially, and politically marginalised. The most polluted sites in the country are away from their policy-makers. They are far from where you see. They are just invisibilized. So a lot of our work with fence-line communities is to make visible this invisible.”

South Asia and India have suffered from lack of investments in clean transport and energy generation that would reduce outdoor air pollution sources

It is widely acknowledged that government policies and investments supporting cleaner transport, renewable power generation, more energy-efficient homes, industry, and better municipal waste management would reduce key sources of outdoor air pollution. South Africa and India have long suffered from poorer implementation of legislation. South Africa brought in a Clean Air Act in 2004, but Euripidou stated that actual implementation has been difficult.

“Those plans were never, ever put into effect. So municipalities in South Africa that are struggling with service delivery just didn’t have the wherewithal; they didn’t have the budgets to appoint air quality officers, to maintain the air pollution monitoring equipment in their jurisdictions, or to do sufficient investigations for exceedances of ambient air quality.”

Narayan has had some success in engaging local government in India, referencing a project working with the Health Department in the State of Chhattisgarh, where local health workers “have trained themselves in the science of air pollution, and they have been able to use low-cost devices to identify what the air quality is like so that they can use that information to advise vulnerable populations.”

As for what the future holds, both Naryan and Euripidou are optimistic that the situation is still reversible as long as governments take immediate action. And immediate action is needed: the WHO estimates that between seven and nine million people die annually from health complications caused by air pollution. The tipping point of no return is not too far in the future though, as Narayan states: “It is impossible to have healthy people on a sick planet. The blatant disregard for the environment, which is entrenched in our current economic and social models, has pushed the natural world to its limits.”

Listen to more episodes of Global Health Matters.

Image Credits: TDR.

vaccine
The third phase of the clinical trials is expected to have 26,000 participants, including those living with HIV and without TB infection, across more than 50 sites in Africa and SouthEast Asia.

A tuberculosis (TB) vaccine candidate that has shown modest efficacy rates received a $550 million boost from the Bill and Melinda Gates Foundation (BMGF) and Wellcome Trust, which announced on Tuesday that they will cover its Phase 3 clinical trials.

The candidate vaccine, M72, showed modest 54% efficacy in preventing the development of symptomatic TB in a Phase 2b trial involving over 3500 adults with latent TB.

The third phase of the clinical trials is expected to have 26,000 participants, including those living with HIV and without TB infection, across more than 50 sites in Africa and Southeast Asia. 

If this phase of the trials returns effective results, M72 will be the first vaccine targeting adults and adolescents, protecting those who already have latent TB infection from developing severe infection.

Around 5%-10% of those with latent TB infection go on to develop TB disease. People with weak immune systems, especially those living with HIV, are at a higher risk for developing the disease. 

Although M72’s efficacy is modest, a TB vaccine for adults with at least 50% efficacy can avert up to 8.5 million TB deaths and up to 76 million new infections by 2050.

“To support the M72 Phase III clinical trial, which will cost an estimated US$550 million, Wellcome is providing up to $150 million and the Gates Foundation will fund the remainder, about $400 million,” a press release from BMGF said

“TB remains one of the world’s deadliest infectious diseases,” said Julia Gillard, chair of the Board of Governors at Wellcome. “Sustainable progress against TB and wider disease threats will depend on global collaboration, financial backing, and political will.”

The only TB vaccine in use today, Bacille Calmette-Guérin (BCG), was first given to people in 1921. It helps protect babies and young children against severe systemic forms of TB but offers limited protection against pulmonary TB among adolescents and adults.

“With TB cases and deaths on the rise, the need for new tools has never been more urgent,” said Bill Gates, co-chair of the BMGF. 

“Greater investment in safe and effective TB vaccines alongside a suite of new diagnostics and treatments could transform TB care for millions of people, saving lives and lowering the burden of this devastating and costly disease.”

M72 was initially developed by GlaxoSmithKline (GSK) in partnership with Aeras and the International AIDS Vaccine Initiative (IAVI), but GSK has since transferred the vaccine’s license to the Gates Medical Research Institute (Gates MRI), an affiliate of the BMGF. 

M72 is one of 17 TB vaccine candidates currently in the development pipeline. 

Image Credits: Photo by Diana Polekhina on Unsplash.

covid-19
The results of a controversial “human challenge” study challenged the assumption that the contagiousness of a person is correlated to the severity of their symptoms.

Since the beginning of the SARS-CoV-2 pandemic, the popular assumption was that people displaying severe symptons were also the most contagious. But new data from a controversial Imperial College London study published on Tuesday found the two participants that were the biggest “superspreaders” of the virus both displayed only minor symptoms. 

“How symptomatic a person is has often been assumed to indicate their contagiousness,” said the authors of the ‘challenge’ study, published in The Lancet.  The study, involving healthy volunteers who were deliberately infected with COVID at a time when no vaccine or treatments existed, found that the severity of symptoms experienced by the volunteers “did not influence the extent of viral emissions.” 

At the time of its launch in 2021, one leading expert called it “dumb and dangerous“, in an interview with Health Policy Watch.

But the data collected from the 34-person study paid off.  There was no direct relationship between symptom severity and viral load among the 18 volunteers who went on to develop COVID, and were monitored for two weeks from a hospital bed. The variability is something the researchers suggested may be attributable to the diversity of physiological factors such as breathing mechanics or mucous acidity. 

“It’s that variability among humans that has made this virus so difficult to control,” Monica Gandhi, an infectious-diseases expert at the University of California told Nature, in a review of the findings.    

Ethics and risk

The study’s findings are as provocative as its design. The trial is a “human challenge” study, in which researchers deliberately infected participants with COVID-19 in what is known as a “human challenge” study. The ethics of infecting healthy, young participants with a potentially life-changing and potentially deadly virus – regardless of scientific upside – are fiercely contested.

When the Imperial College study was announced in 2021, Dr Ken Kengatharan, co-founder and chairman of the California-based biotech firm Renexxion, told Health Policy Watch that a COVID-19 challenge study was “as dumb and dangerous an idea as it gets”.

“SARS-CoV-2 is an atypical coronavirus (without any comparable out there or historically, and we are just learning about its mode of action,” Kengatharan said at the time.   

Many of Kengatharan’s apprehensions have since been proven right. Around 36 million people in Europe – one in 30  – may have developed long-COVID over the first three years of the pandemic, the World Health Organization (WHO) announced Tuesday.

“Clearly much more needs to be done to understand it,” WHO European Director Dr Hans Kluge said. “Ultimately, the best way to avoid long-covid is to avoid COVID-19 in the first place.”

Understanding the role of “superspreaders” in the COVID pandemic could be and important component of effective policy making frameworks for future outbreaks.  Superspreader patterns were also identified during earlier coronavirus outbreaks, such as the SARS outbreak that began in 2002, and the outbreak of Middle East respiratory syndrome coronavirus a decade later.  

WHO’s symptomatic criteria for testing were ill-founded

Viral emissions mostly occurred after participants developed early symptoms and began to test positive by lateral flow tests, the study found.

The authors of the study reckon the unique perspective their data provides on several key public health questions about the COVID-19 virus justifies the risks taken by the volunteers.

The unpredictable nature of COVID-19 has led scientists and average people alike to speculate that pre-symptomatic infections were a big reason the virus proved so hard to contain. Scientific modelling has estimated that at least 30-50% of community transmission occurred before people became visibly sick, but models are only accurate to the extent of the assumption that underpin them.

The data released by the Imperial study is also the first to quantify pre-symptomatic viral emissions in a real-world setting, and tells a different story: just 10% of virus emissions recorded occurred before the onset of symptoms. 

In that respect the study also challenged the usefulness of the WHO’s suspected case criteria, observing that over one-third of virus particles emitted by participants were shed before symptoms met the WHO guidelines.

The UN health agency’s criteria, used by governments around the world to determine eligibility for COVID-19 testing at the height of the pandemic, are “relatively poor definers of the onset of contagiousness,” the study said.

In contrast to the inefficacy of the WHO criteria, lateral flow tests were able to identify infections in most participants before symptoms and viral shed began – demonstrating their potential power for containing future outbreaks.  

“A heightened awareness of early symptoms prompting self-testing could identify a large proportion of infectiousness,” the study said.

Researchers said further challenge studies on newer variants of COVID-19 such as Omicron are planned for the near future.

Image Credits: Unsplash, ClimateWed/Twitter, Maxpixel.

The Gambia
Medicated syrups manufactured in India have come under the global scanner for contamination.

The Gambia has mandated pre-shipment quality testing on all pharmaceutical products exported from India. The requirement will come into effect on 1 July 2023. It can be understood as an after-effect of last year’s scandal whereby India-manufactured cough syrups allegedly claimed the lives of 66 children in The Gambia in 2022 . 

Following the episode, WHO conducted independent testing of the cough syrup samples that had been administered to the children in Switzerland, finding 23 samples contaminated with the industrial chemicals, DiEthylene Glycol (DEG), and Ethylene Glycol (EG).  

In May, following a series of scandals involving contaminated cough syrups both domestically and abroad, India made it mandatory for all exported syrups to undergo testing and certification from a government laboratory from 1 June.  No such requirement yet exists, however, for domestic production. 

However, the new rules regarding exports, as well as imposition of quality-assurance requirements by other countries, such as The Gambia, should further put the industry on alert regarding long standing issues with quality assurance.  

According to a communique sent by the Medicines Control Agency (MCA) of The Gambia to the Drugs Controller General of India (DCGI), and published by the Indian drug control agency, all pharmaceutical products that will be exported to the country shall be inspected and sampled for testing to ensure they conform to quality standards. 

To make sure that the products meet quality-assurance criteria, the MCA has appointed Quntrol Laboratories Private Limited, an independent verification, inspection and testing company, to carry out the process and issue a Clean Report of Inspection and Analysis (CRIA) for each shipment from India to The Gambia, beginning in July. 

“All shipments arriving into The Gambia with bill of lading [export document] dated on or after 1 July 2023 will be required to provide the CRIA for customs clearance at the Ports of Entry in The Gambia,” the communiqué dated 15 June 2023 said. 

The DCGI has circulated the communiqué among all the state drugs controllers, their counterparts at the zonal and sub-zonal levels, and the various manufacturing associations in India. “This is for your information and immediate action,” the letter from the Indian DCGI to the other stakeholders said. 

According to the process outlined by The Gambian MCA, the exporter of the pharmaceutical products is responsible for raising an inspection request with Quntrol Laboratories, which will then retrieve samples from the shipment and send them to be tested in MCA approved labs. Upon successful testing of the samples, a CRIA is sent to the exporter, which shall be shared with the importer. The importer shall use this certificate to take possession of the shipments from The Gambian Ports of Entry. 

Deaths in The Gambia strongly linked to Indian cough syrups

In October 2022, the World Health Organization (WHO) issued a product alert for substandard cough syrups manufactured in India, linked to the deaths of at least 66 children in The Gambia. The syrups were manufactured by Maiden Pharmaceuticals in India. 

India halted production at the plant temporarily after WHO commissioned lab tests found DiEthylene Glycol (DEG) in the range of 1% to 21.30% weight/volume in the cough syrup samples. DEG is completely banned in pharmaceutical products. 

India has, however, also maintained that its tests on the control samples of the cough syrups collected from the batches exported to The Gambia showed no traces of contamination.

Meanwhile, The Gambia had sought the assistance of the US CDC to investigate the sudden spike in AKI in children between June and September 2022. In March 2023, the US CDC released its report that suggested strong links between the cough syrups consumed by the children and their AKI. 

“This investigation strongly suggests that medications contaminated with DEG or Ethylene Glycol (EG) imported into The Gambia led to this AKI cluster among children,” the report stated. 

Other product alerts for Indian cough syrups

In January 2023, WHO issued another alert flagging two products manufactured in India and exported to Uzbekistan and Cambodia as containing “unacceptable amounts” of DEG and/or EG. Both these products were manufactured by Marion Biotech Private Limited in India. The alert came after Uzbekistan alleged that 18 children died after consuming the syrup. 

In April 2023, the WHO issued yet another product alert flagging a contaminated syrup identified in Marshall Islands and Micronesia. The syrup was manufactured by Trillium Pharma in India and also contained “unacceptable amounts of DEG and EG”, as per the WHO report. Trillium Pharma, however, has maintained that it did not sell these products in these countries. 

Within India, as well, communities in states as far-flung as Kashmir and central as Uttar Pradesh have reported a series of adverse events associated with the administration of cough syrups. 

The problems occur primarily in the manufacturing process. When paracetamol syrup or cough syrups are manufactured, they need a solvent to dissolve the active ingredients, add sweetness, and act as a lubricant. The solvents used are either glycerine or propylene glycol, a clear, faintly sweet, and viscous liquid.

Glycerine Indian Pharmacopoeia (IP) grade is supposed to be used in drugs and medicines, in line with good manufacturing practices framed by the WHO.  However, when industrial glycerine, used in chemicals and cosmetics, is used instead, it can contain contaminants such as diethylene glycol and ethylene glycol. 

Image Credits: Photo by Towfiqu barbhuiya on Unsplash.

Medicines Patent Pool

The Medicines Patent Pool (MPP) announced sublicensing agreements with seven manufacturers to produce and distribute generic versions of Japanese pharmaceutical company Shinogi’s COVID-19 antiviral treatment in 117 low- and middle-income countries. 

Ensitrelvir is an oral antiviral currently only approved in Japan under the country’s emergency regulatory approval system. The drug is being evaluated under a fast-track designation by the US Food and Drug Administration, and its regulatory authorization is still pending in all the 117 countries listed in the license agreement. 

“Even though COVID-19 is no longer classified as a Public Health Emergency of International Concern, we see numbers ebb and flow across continents as we learn to live with the disease,” said Charles Gore, Executive Director of MPP. “Having quality effective treatments readily available in LMICs is still so important.” 

The absence of regulatory approval for Shinogi’s drug stands in contrast to Paxlovid, a similar oral antiviral rolled out by Pfizer in the early months of the pandemic. Paxlovid has been available under emergency authorization in the United States since December 2021, which was followed a month later by the European Union. Full marketing approval was granted by both the US and EU in the first half of 2023. 

Ensitrelvir has a steep hill to climb

MPP signed sublicensing agreements to manufacture and distribute Paxlovid in 95 low- and middle-income countries in November 2021. Under the terms of the agreement, Pfizer abstained from royalties on sales as long as COVID-19 remained classified as a Public Health Emergency of International Concern.

The WHO’s declaration of the end of the COVID-19 public health emergency in May changed the terms, but not by much. Pfizer became entitled to a 5% royalty fee on sales to the public sector in lower-middle-income and upper-middle-income countries. Low-income countries, however, can still purchase Paxlovid without paying royalties. 

Ensitrelvir still has a steep hill to climb if it is to make an impact. But for communities on the ground in LMICs, the prospect of having access to another treatment is good news. 

“Through my work, I support two sisters who lost their parents to COVID-19 at the height of the pandemic. In our communities, such loss goes beyond the terrible grief as the young adolescents have been left to fend for themselves at a vulnerable age,” said Nombeko Mpongo of the Desmond Tutu HIV Center in South Africa. 

“Access to treatment is so much more than a question of life and death, it is about the well-being of entire communities,” he said. “I welcome this announcement that will enable equitable access to COVID-19 treatments in my country and other LMICs.”

Oasis de Huacachina in Ica, Peru

Peru is experiencing its worst-ever outbreak of dengue fever, with over 172,000 cases by Monday, according to the country’s health department.

Of these, over 92,000 are confirmed while almost 80,000 are suspected cases, with countrywide floods and increasing temperatures driving the outbreak.

The country has declared a health emergency in 222 districts. The north-western provinces of Piura and Lambayeque are worst affected, while the worst affected cities are Lima and Ica.

Some 228 people have been confirmed to have died from the viral infection that is transmitted by infected Aedes mosquitos. However, the fatality rate is expected to rise as health authorities investigate further deaths.

Peru’s caseload is already double that reported in the same period last year, and more than four times higher than the average of the last five years, according to the World Health Organization (WHO).

Meanwhile, Argentina also experienced one of the largest dengue outbreaks in its history in the first three months of this year (dengue is most prevalent there between October and May). 

“The incidence of dengue has grown dramatically around the world in recent decades, especially in the Americas, which reported 2.8 million cases and 1,280 deaths last year,” WHO Director-General Dr Tedros Adhanom Ghebreyesus told a media briefing last week.

“The WHO is preparing for the very high probability that 2023 and 2024 will be marked by an El Nino event, which could increase transmission of dengue and other so-called arboviruses, such as Zika and chikungunya,” Tedros added.

“The effects of climate change are also fueling mosquito breeding and the spread of this disease.”

By 8 June, 2,162,214 cases and 974 dengue deaths have been reported globally, according to the European Centre for Disease Prevention and Control. Brazil, Bolivia, Peru and Argentina, in that order, had the highest caseloads.

Dengue is endemic in 129 countries, with 70% of cases in Asia. There are about 390 million infections per year, and there has been an 85% increase in cases between 1990 and 2019, according to the Drugs for Neglected Diseases initiative (DNDi).

Last year, the WHO launched the Global Arbovirus Initiative to strengthen the world’s ability to prevent, detect, and respond to outbreaks of arthropod-borne viruses (Arboviruses) such as dengue, yellow fever, chikungunya and Zika. Arboviruses are public health threats in tropical and sub-tropical areas where approximately 3.9 billion people live.

Image Credits: Wikipedia.

Pollution in Delhi peaks in late autumn when drifting emissions from crop burning exacerbate the usual urban household, traffic and industrial sources

New science shows how air pollution triggers lung cancer, how children are the most vulnerable in Delhi’s smog, and how even small rises in PM 2.5 increase the risk of heart attacks, strokes and dementia. 

NEW DELHI – You can opt for silver, gold or platinum options for cancer-specific health insurance, according to an advertisement in India – the first group outside the health sector that has realised the country’s cancer burden is rising sharply. 

Five years ago, the number of new cancer patients was 1.15 million annually. Now it’s about 1.4 million

Modelling based on India’s National Cancer Registry Programme Report estimates that the incidence of cancer will increase by 12.8% between 2020 and 2025.

A series of recent studies expand our understanding of at least one major cause:  air pollution. For India, home to 39 of the world’s 50 most polluted cities, any understanding of the devastating health impact of lousy air quality is welcome. But is it enough to push the needle?

Fine particles of pollution – PM 2.5 – are known to be linked to not just cancer, particularly of the lungs, but also heart attacks, strokes, dementia and chronically diseased lungs (COPD) apart from much else. 

One of the most critical recent scientific breakthroughs comes from scientists at the Francis Crick Institute in the UK, who show how air pollution can cause lung cancer in people who have never smoked in research recently published in Nature.

“We have improved our understanding of how particulate matter air pollution can trigger cancer to start – by waking up dormant mutant cells present in the lung,” Professor William Hill, one of the lead authors, explained to Health Policy Watch.

In what should be a wake-up call to governments and lawmakers, these scientists have linked PM 2.5 air pollution and potentially fatal health risks beyond any reasonable doubt. 

In email correspondence with Health Policy Watch, Hill and colleague Emilia Lim explained: “We take a three-pronged approach, integrating epidemiology in Western and Asian cohorts, preclinical models and clinical cohorts to understand how air pollution promotes EGFR mutant lung cancer.” 

Simply, EGFR is a protein in cells that helps them grow. A mutation in the gene for EGFR can make it grow too much, which can cause cancer. 

Worryingly, they say their findings may mean that only three years of exposure to a high level of air pollution may be enough to cause lung cancer.

‘Never smokers’

The study looked at three countries, England, South Korea and Taiwan. It looked at ‘never smokers’ because they say that although smoking remains the biggest risk factor for lung cancer, outdoor air pollution causes roughly one in 10 cases of lung cancer in the UK. 

An estimated 6,000 people who have never smoked die of lung cancer every year in the UK, some of which may be due to air pollution exposure. Globally, around 300,000 lung cancer deaths in 2019 were attributed to exposure to PM 2.5. 

THE LUNG CANCER THREAT

  • Most commonly diagnosed cancer globally
  • Leading cause of cancer death
  • Highly fatal, with an overall five-year survival rate of only 18%
  • In India, in 2018, of almost 68,000 cases, mortality was over 90%
  • One in 9 people are likely to develop cancer, including of lungs

India’s official denial

Despite the recent research, the government of India maintains that there is no conclusive link between air pollution and fatal disease. In April 2023, in response to a parliamentary question on air pollution deaths, the Ministry of Environment, Forest and Climate Change stated: “There are several studies conducted by different organizations, using different methodologies, on the impact of air pollution. However, there is no conclusive data available to establish a direct correlation of death/ disease/ life expectancy exclusively with air pollution.”

The Ministry added: “Air pollution is one of the many factors affecting respiratory ailments and associated diseases. Health is impacted by a number of factors which include food habits, occupational habits, socioeconomic status, medical history, immunity, heredity, etc., of the individuals apart from the environment.”

 But even the government-run Indian Council of Medical Research (ICMR) journal has identified air pollution as offering the same attributable risk as tobacco use (43% each) for lung cancer Disability Adjusted Life Years (DALY). One DALY represents the loss of the equivalent of one year of full health either due to premature death or living with a disability due to a disease, for example, chronically diseased lungs or COPD.

The PM 2.5 threat

What the new reports show is that even small increases in pollution can increase the risks. 

One report, based on 14 studies, shows that there is as much as a 9% increase in risk for lung cancer or mortality for an increase in PM 2.5 of as little as 10 micrograms (mcg) per cubic metre. To put that into context, the WHO’s safe limit guideline is 5 mcg and Delhi averaged 105 mcg over three years between 2019-21.

Studies in dementia show similar trends. For every 2 mcg increase in average annual PM 2.5 concentration, the overall risk of dementia rose by 4%. 

According to the  BMJ journal, current estimates suggest that PM2.5 concentrations in major cities vary considerably from below 10 mcg in Toronto to more than 100 mcg in places like Delhi. However, the scientists have flagged uncertainties like the role of socio-economic status and ethnicity. 

Source: Commission for Air Quality Management, Government of India

Heart attacks and strokes

Air pollution also contributes to fatal heart attacks and strokes: A five-year study in Poland looked into almost 88,000 deaths of which over half – 48,000 – were caused by heart attacks and strokes. 

A 10 mcg increase in PM 2.5 exposure was associated with a 3% increased risk of dying from cardiovascular disease on the same day and the increased risks continued for up to two days after the polluted day. 

For strokes, the risk was far higher – an 8% increased risk. Again, to put this in context for India, there are days and weeks in parts of the north where the PM 2.5 levels shoot up from already high levels of 100 mcg to super-high levels of 700 mcg or more.  

Dr Arvind Kumar, one of India’s senior-most chest surgeons at Medanta Hospital in Gurugram, says the Poland study is well conducted and a valuable addition to existing literature. 

“The message for India is that we have even higher levels of pollution here,” said Kumar, a prominent campaigner for clean air.

“People say the economic costs are high of not building new coal power plants, of not cutting emissions. But the cost of not doing so is far higher – premature deaths are far costlier.”

Farmers burning crop stubble north of Delhi is one of the causes of the city’s air pollution.

Babies and children worst affected

 In a response to a question from Dr Amar Patnaik, a Member of Parliament, on the impact of air pollution on children, the environment ministry said in April 2023, that it had not conducted any specific studies on the mechanisms and future projections of air pollution on children’s health, education and social adaptability levels. 

 But other branches of the government have supported studies in pollution-cancer linkages. One study has explicitly stated that babies (aged three- to 21 months) and children (8-14 years of age) are more susceptible to getting fine particles’ deposited in their inner lungs (alveolar region). Alveoli are millions of tiny air sacs in your lungs that absorb oxygen. 

The study was published at the end of 2022 and looked at Delhi’s ‘severe’ smog event over two weeks in November 2017, when the PM 2.5 level crossed 700 mcg, and on average was about 29 times the WHO’s safe limit. 

The smog was largely attributed to the burning of crop residue in states north of Delhi, in addition to climatic factors like low temperatures and wind speed. 

The report looked at the toxic elements deposited in three parts of the body – head, trachea–bronchial, and pulmonary regions. It found the highest mass flux in babies and children. 

What people inhale in Delhi smog:

Doses of Toxic Elements Found to be Many Times Higher in Children Than Adults. 

  • Cr: Chromium
  • Fe: Iron
  • Zn: Zinc
  • Pb: Lead
  • Cu: Copper
  • Mn: Manganese
  • Ni: Nickel

Source: Physico-Chemical Properties and Deposition Potential of PM2.5 during Severe Smog Event in Delhi, India

 Many parents are increasingly careful about what their kids eat – and now many are also concerned about what they breathe. The science is unequivocal but there’s little they can do without the help of lawmakers, governments and courts. 

Government’s inadequate response

It’s not as though the various branches of India’s government aren’t doing anything. Millions of dollars have been allocated as part of various schemes. 

But analysts point out it is insufficient. For example, the union (federal) budget for the National Clean Air Programme has almost doubled in the last two years but it is now only a little over $90 million.

The Commission for Air Quality Management, a statutory body set up to improve air quality in and around the capital of New Delhi, one of the world’s most polluted areas, saw its budget reduced last year by about 13% to $2 million. It remains frozen at that level for the current year, and the provincial government of Delhi has marginally cut the budget for the environment. 

This is in spite of the government having set an ambitious target to cut pollution levels in cities by 40% by 2025-26. 

But even this apparently ambitious target is concerning when it is unpacked. The target only applies to PM 10, the larger particulate matter pollutant, and does not define targets for the finer and far more lethal PM 2.5. In addition, the government’s earlier target was to cut pollution by 20-30% target – but two years sooner.

Given that Delhi and its neighbourhood’s PM 2.5 levels are, on average, some 20 times higher than the WHO’s safe limits, there is a need to explicitly measure and target this. Citizens have a fundamental right to clean air. 

Image Credits: Flickr, Source: Commission for Air Quality Management, Government of India, Neil Palmer.

Mpox
Countries including the US, the UK, Spain, Belgium, and the Netherlands are seeing an increase in Mpox cases in the past few weeks.

Europe reported 22 cases of Mpox in May, prompting the World Health Organization (WHO) to urge people in high risk communities to get vaccinated if possible. 

WHO Europe director Dr Hans Kluge said that the virus is still in circulation, particularly affecting men who have sex with men. He added that people in high risk groups can also protect themselves from getting infected by following preventative measures. 

“There are things you can do – get vaccinated against Mpox if vaccines are available, limit contact with others if you have symptoms, and avoid close physical contact including sexual contact with someone who has Mpox,” Klugo told a WHO Europe briefing on Tuesday. 

In addition to the Mpox update, the Kluge addressed the health emergency situation in Ukraine after the Nova Kakhovka dam was destroyed three weeks ago, long COVID, and extreme heat in Europe. 

“Mpox resurgence not surprising”

Countries including the US, the UK, Spain, Belgium, and the Netherlands are seeing an increase in Mpox cases in the past few weeks. Health officials in Los Angeles and Colorado have issued alerts and launched vaccination campaigns to protect those in high risk groups, while London has extended the vaccination programme for Mpox due to the spike in cases in the city. 

WHO Euro
Dr Catherine Smallwood, Senior health emergency officer, WHO Europe.

Requesting those at high risk to remain vigilant and protected, Dr Catherine Smallwood, WHO Europe’s senior health emergency officer, said extreme vigilance is necessary, especially during the summer when travelling is at its peak. 

“As we enter this period of the Pride celebrations and the travel across the region, we need to remain extremely vigilant at that population level to catch early signs of disease,” she said. 

Adding that the current resurgence is not a surprise, Smallwood explained that the learnings from the outbreak in 2022, with thousands of new cases being reported every day across the continent, were immense. 

“We took a lot of time to look at why that was happening, and look at the factors that determined not only the rise in infections, but also the decline. And we understood that certainly it was linked to increased travel, particularly around June months, where there was a lot of travel to Pride events for the first time during the pandemic.”

The clear policy response to tackle Mpox, she said, is to continue investing in an elimination strategy. “We have the benefit here in Europe of not having an animal reservoir of the virus. It means stopping sustained human to human transmission is quite possible. And that’s what we implore member states, countries in the region to look into doing.”

Extreme weather events killed 16,000 in 2022

Referring to a recent report on the impact of global warming on Europe, Kluge warned that in the coming years, extreme heat in the continent will be a norm rather than an exception. 

The World Meteorological Organization (WMO) and the Copernicus Climate Change Service (C3S*) jointly released their annual State of the Climate in Europe 2022 report on 19 June. 

The report states that Europe is the fastest warming region in the world, “warming twice as much as the global average since the 1980s”. In 2022, high-impact weather and climate events have killed over 16,000 persons, of which around 99.6% were attributed to heat waves. 

WHO Euro
Dr Hans Henri P Kluge, WHO Europe Regional Director.

Extreme heat in the summer months is becoming the norm, not the exception,” Kluge said, adding that the high temperatures greatly increase the risk of wildfires across the continent.

He pointed out that parts of Spain and Portugal recorded temperatures over 40 degrees Celsius last year between June and August. “So look out for each other during the summer months by checking in on your elderly relatives and neighbours, limiting outdoor activity when it’s very warm, staying hydrated, keeping your home school, and allowing yourself time to rest alongside an increased recent risk of extreme heat.”

In addition, Kluge also mentioned that WHO Europe will be co-hosting the first Indoor Air Quality Conference in Berne, Switzerland, in September, 2023, with the Institute of Global Health. The conference will aim to make a case for monitoring and improving air quality inside buildings, in order to prevent transmission of respiratory infections.

Ukraine’s health risks compounded by dam disaster

Three weeks since Ukraine’s Nova Kakhovka dam gave in, the region remains susceptible to high risk of water borne diseases. Around one million people are without safe, clean water. 

WHO Euro
Dr Gerald Rockenschaub, WHO Europe regional emergency director.

“All kinds of communicable diseases due to the contamination of drinking water are a major public health risk there… We had already prepositioned supplies, testing kits etc which we could mobilize to provide to local authorities,” said Dr Gerald Rockenschaub, regional emergency director at WHO Europe.  

Expressing concern over the risk of leaving people behind, especially in areas like Mariupol and Donbas where the WHO still does not have access to provide healthcare services, Kluge said the agency has been calling for an international humanitarian corridor in the region for over a year to reach people living in these areas. 

“We are working together to beef up surveillance particularly for what we call ‘water borne diseases’ which include diseases like cholera, typhoid, hepatitis etc… We have been calling for an international humanitarian corridor for over a year now [to address] the lack of access to people in areas such as Mariupol and Donbass where still WHO does not have access and are very concerned that people are being left behind.”

Spotlight on Long COVID in transition plan

Although the WHO has declared an end to the pandemic, long COVID continues to remain a huge challenge to people and experts alike. According to the latest data from the Institute for Health Metrics and Evaluation (IHME) at the University of Washington, Seattle, nearly 36 million people across western European may have experienced long COVID in the first three years of the pandemic, Kluge said. 

“That’s approximately one in 30 Europeans over the past three years. That’s one in 30 who may still be finding it hard to return to normal life, one in 30 who could be suffering in silence left behind as others move on from COVID-19,” he said. 

“We are listening to the calls from long covid patients and support groups and raising awareness of their plight, but clearly much more needs to be done to understand it.”

The WHO Europe released “The transition from the acute phase of COVID-19: Working towards a paradigm shift for pandemic preparedness and response in the WHO European Region” on 12 June, detailing the regional strategy in dealing with COVID-19 and its after effects in Europe in the coming years. 

While emphasizing on the importance of individuals getting vaccinated according to their risk status, the document also outlines the structural and sustainable changes that need to be made in order to bolster up the resilience of health systems in the region. 

Some of these measures are very, very clear, but for member states, governments, public health authorities, the real message here is that this is not the time to pack up and move away from COVID-19,” Smallwood said. 

“Right now, we have a huge opportunity to invest in and sustain the gains made…We need to right-size those COVID response operations into day-to-day public health operations, public health services.” 

Image Credits: National Institute of Allergy and Infectious Diseases (NIAID).