Pfizer launches study of COVID vaccine targeting omicron
(AP) - Pfizer has begun a study comparing its original COVID-19 vaccine with doses specially tweaked to match the hugely contagious omicron variant. Pfizer and its partner BioNTech…
(AP) - Pfizer has begun a study comparing its original COVID-19 vaccine with doses specially tweaked to match the hugely contagious omicron variant. Pfizer and its partner BioNTech…