World Health Organization (WHO) has announced that a modified coronavirus vaccine that targets the Omicron variant can be administered as a booster dose to broaden immunity Such a variant-adapted vaccine may benefit those who have already received the primary series of shots, the agency's panel on COVID-19 Vaccine Composition said, it added.
The vaccines could be considered for use globally by the agency once they get emergency use authorization or an approval by a stringent national regulatory authority.
Moderna and Pfizer Inc are already working towards developing potential next generation booster. The vaccine will target Omicron variant as well as the original strain of the coronavirus.