booster dose

Chinese researchers say vaccine's efficacy against new variant remained unclear

Inactivated vaccines are made by Chinese manufacturers Sinovac, Sinopharm and India's Bharat Biotech

Many scientists tracking the data believe it's the right time for the move — though some have expressed misgivings

Chinese findings also shows the booster enhanced cell-based responses to the coronavirus

The Lancet report concluded that booster doses are not appropriate at this stage despite Delta threat