A fourth COVID-19 booster mRNA vaccine has proven ineffective against Omicron infection, according to preliminary research from Israel released on Monday. “Despite a significant increase in antibodies after the fourth vaccine, this protection is only partially effective against the Omicron strain, which is relatively resistant to the vaccine,” lead researcher Prof Gili Regev-Yochay, told a … Continue reading Israel Finds Fourth COVID Booster is only ‘Partially Effective,’ Vast Majority of Hospitalised Omicron Patients Are Unvaccinated