RELATED: Psaki relinquishes podium to Fauci for pandemic update during 2nd Biden White House press briefingWith some, the antibodies didn't work as well against the virus -- activity was one-to-threefold less, depending on the mutation, said the study leader, Rockefeller’s Dr.
Michel Nussenzweig.Advertisement"It’s a small difference but it is definitely a difference," he said. The antibody response is "not as good" at blocking the virus.Earlier research established that the two vaccines are about 95% effective in preventing COVID-19 illness.The latest findings were posted late Tuesday on an online website for researchers and have not yet been published in a journal or reviewed by other scientists.