Pfizer CEO warns of the early need for fourth Covid dose

Pfizer CEO warns of the early need for fourth Covid dose

December 10, 2021: -Pfizer CEO Albert Bourla said Wednesday that people might need a fourth Covid-19 shot sooner than expected after preliminary research shows the new omicron variant can undermine protective antibodies generated by the vaccine the company developed with BioNTech.

Moderna says its Covid vaccine is 100% effective

Moderna says its Covid vaccine is 100% effective

May 26, 2021: -On Tuesday, Moderna said its Covid-19 vaccine was 100% effective in a study of adolescents ages 12 to 17, making it the second shot behind Pfizer’s to demonstrate high efficacy in younger age groups.