Coronavirus humoral immunity may decline in months after infection - study
Researchers called for a larger study of humoral immunity, saying that their small study emphasizes the need for further research.
A medic of the regional hospital receives Russia's "Sputnik V" vaccine shot against the coronavirus disease (COVID-19) in Tver, Russia October 12, 2020. (photo credit: REUTERS/TATYANA MAKEYEVA/FILE PHOTO)ByEVE YOUNG
