Dr. Anthony Fauci, US President Joe Biden’s chief medical adviser, said on Thursday that it is not clear yet if people will need yearly COVID-19 boosters, even as the chief executives of several drugmakers have indicated a fourth vaccine dose may be necessary.
"We've only recently boosted people. We will find out if the booster gives you a degree of durability of protection and actually should be the standard regimen of three doses of an mRNA and two doses of J&J," Fauci said in an interview with NBC News and quoted by The Hill.