New WHO Global Malaria Report points to funding shortfalls, climate change, and antimicrobial resistance as key challenges to control.

Last year saw 263 million new malaria cases and 597,000 deaths in 83 countries worldwide, an increase of almost 11 million cases from the prior year, according to the World Health Organization’s (WHO) newly-released Global Malaria Report. The vast majority of cases occurred in the African continent, with children under five bearing the greatest burden of malaria mortality. 

Targeted interventions like insecticide-treated bed nets and integrated vector management, alongside factors such as improved nutrition, housing, and urbanization, have all reduced malaria transmission and disease in the past decades. More than 177 million cases and 1 million deaths were averted globally in 2023, and Egypt was declared malaria free, a significant milestone for Africa’s third-most populous country, according to the WHO.

Yet despite progress made in reducing the spread of the ancient disease, challenges like climate change, humanitarian crises, drug resistance, and persistent disparities all threaten global malaria progress. 

“Instead of dying, mosquitoes are dancing on the treated bed nets,” said Dr Michael Charles, CEO of RBM Partnership to End Malaria, referring to the growing number of mosquitoes resistant to commonly-used insecticides. 

The number of new malaria cases actually increased in the past years, the report notes. Malaria case incidence – the number of new cases while accounting for population growth – grew from 58 to 60.4 cases per 1000 between 2015 and 2023. Five countries accounted for the majority of this increase in cases: Ethiopia (+4.5M), Madagascar (+2.7M), Pakistan (+1.6M), Nigeria (+1.4M) and Democratic Republic of Congo (600K). 

The WHO presented its newly-released report on the global state of malaria as a combination of both hard-fought victories, and obstinate and emerging challenges ahead of key replenishment rounds next year.

“No one should die of malaria; yet the disease continues to disproportionately harm people living in the African region, especially young children and pregnant women,” said Dr Tedros Adhanom Ghebreyesus, WHO Director-General.

“An expanded package of lifesaving tools now offers better protection against the disease, but stepped-up investments and action in high-burden African countries are needed to curb the threat.”

Africa ‘not on pace’ to meet WHO target

The Africa region bears the brunt of the global malaria burden – both in the number of cases and deaths – with 11 countries accounting for two-thirds of cases worldwide. Nearly half of these deaths occurred in just four countries: Nigeria (30.9%), Democratic Republic of the Congo (11.3%), Niger (5.9%), and United Republic of Tanzania (4.3%). 

Over 75% of deaths in the African region were among children under the age of five. Progress to reduce malaria mortality has barely budged in the past decade. The 2023 malaria mortality rate of 13.7 deaths per 100,000 people at risk was more than twice the WHO global strategy target of 5.5. 

While these rates remain high, many African countries have either stabilized or reduced their mortality rates. Dr Mary Hamel, WHO Team Lead for Malaria Vaccines, credits this to vaccinations for children in conjunction with bed nets and other interventions. 

“The vaccine is recommended by the WHO from five months of age, and during the pilot implementations where the governments of Ghana, Kenya, and Malawi introduced the vaccine …we saw high impact from these young age periods, with reduction in all cause mortality in these young children by 13% in all cause mortality.”

Seventeen countries have since introduced the malaria vaccine alongside childhood immunizations, with supply so far sufficient to meet demand.

Climate change, conflict, biological threats undermine progress

The many climate change-related disruptions in rising temperatures and changing weather patterns favor the quick-adapting and anthropophilic mosquito species that transmit malaria. The report warns that these changes are impacting the “health, security, and livelihoods of people around the world,” particularly in the hardest hit African region. 

But climate change is threatening malaria control in other parts of the world, like Pakistan. The devastating floods that submerged a third of the country in 2022 also left pools of standing water – “ideal breeding grounds for mosquitoes” and leading to an 8-fold increase in malaria cases between 2021 and 2023, the report notes.

Cases rose from about half a million to more than four million. The increasing frequency of extreme weather events is expected to increase the burden of malaria in the long term, especially because the mosquitoes that transmit malaria are “highly sensitive” to environmental changes, noted Dr Arnaud Le Menach, Unit Head, Strategic Information for Response, WHO Global Malaria Progamme. 

Conflict and ensuing humanitarian crises are impeding efforts to curb malaria. “In some countries, their conflict is also stopping people from getting the needed health access and the needed commodities,” said Charles. Internally displaced peoples often lack access to malaria prevention and treatment, leaving them “highly vulnerable to the disease,” said Le Menach. The report highlights these additional drivers of malaria transmission, noting that more than 80 million people in malaria-affected countries are internally displaced or refugees in 2023.

Biological threats in the form of resistant mosquitoes and antimicrobial resistance make it increasingly difficult to control vectors and treat patients. Resistance to pyrethroids, a common insecticide, was reported in nearly every country it was monitored, while resistance to artemisinin, the most effective malaria treatment, was reported in four African countries. 

Better global, regional, and country coordination is a key solution, according to Charles, to bring together stakeholders. This includes involving civil society organizations and resource optimization to overcome the above challenges. 

Reaching vulnerable populations

The global report features for the first time highlights the significant disparities in malaria burden, with a particular emphasis on gender equality.

“[W]e need to keep in mind the issue of poverty, poverty being a significant risk factor,” said Alia El-Yassir, director of the WHO Department for Gender Equality. “Malaria takes the heaviest toll on those who are poorest and are the most disenfranchised segments of a society. The data shows that children under the age of five who are living in low income households have the highest prevalence of malaria, and as their socioeconomic status improves, the risk of malaria and the prevalence will decrease.”

A host of biological, environmental, social, structural, and economic factors converge to increase a person’s vulnerability to malaria, “disproportionately” impacting those living in poverty, refugees, migrants, and indigenous peoples, notes the report.

“Poverty is very much gendered…gender norms become so deeply entrenched and institutionalized that they will place many women and girls at a disadvantage, and that affects their risk of malaria and also their access to treatment,” said El-Yassir. To address these challenges, the report urges health system strengthening to collect disaggregated data because current averages “are not giving us the true picture in terms of who is being affected.”

Calls for funding ahead of replenishment rounds

Several panelists made calls for funding at a recent WHO press conference in Geneva given the current “shortfalls” in funding. In 2023, less than half of the target $8.3 billion was invested in malaria response. This gap has widened in the past several years from $2.6 billion in 2019 to $4.3 billion in 2023. The vast majority of these funds come from international sources, with endemic countries contributing 33% in the past decade.

“Next year is a very, very big year for all of us in the malaria world,” noted Dr Charles. “We have two replenishments. We have the GAVI replenishment, and we also have the Global Fund replenishment…The mosquito is so unrelentless and so smart that the longer we wait, the harder it is.”

Even with malaria vaccines available, GAVI, the Global Fund, and the President’s Malaria Initiative all need replenishment “to realize the promise of the vaccine and other interventions,” argued Dr Hamel.

The Global Fund also released a statement urging funding to meet targets, making the argument that “investing more in the fight to end malaria not only has the potential to save millions of lives, but it can also help rebalance global economic power and stimulate trade.

“This, in turn, can unlock additional funding to strengthen health systems and enhance health security both in Africa and around the world. Malaria investment is not just a health imperative—it is a strategic driver of broader, far-reaching economic and social benefits,” said Peter Sands, Global Fund executive director, in a press release.

Image Credits: Fanjan Combrink / WHO.