Results from a study in Israel showed both Pfizer-BioNTech and Moderna vaccines were safe and produced substantial antibodies, but were only partially effective in defending against Omicron. Reuters
Results from a study in Israel showed both Pfizer-BioNTech and Moderna vaccines were safe and produced substantial antibodies, but were only partially effective in defending against Omicron. Reuters

Fourth booster shot less effective against Omicron, Israel research finds