Pfizer booster shows promise in kids' trial
A booster shot of the coronavirus vaccine made by Pfizer-BioNTech increased the level of neutralizing antibodies against both the original version of the virus and the omicron vari…
A booster shot of the coronavirus vaccine made by Pfizer-BioNTech increased the level of neutralizing antibodies against both the original version of the virus and the omicron vari…