3 doses 'offer a sufficient level of protection from disease of any severity'
(Newser) -
Two doses of the Pfizer/BioNTech coronavirus vaccine may be enough to prevent serious illness with the omicron variant, but may not be enough to prevent an infection, the companies said Wednesday. However, "preliminary laboratory studies demonstrate that three doses of the Pfizer-BioNTech COVID-19 vaccine neutralize the omicron variant,"...