’60-70% of population needs to be immune to curb Covid-19 transmission’

GENEVA: Modeling studies have revealed that about 60 to 70 per cent of the global population needs to be immune to curb or halt Covid-19 transmission, a World Health Organization (WHO) official said.

Noting the WHO cannot give the exact number of “the proportion of the population that would need to be immunized… The answer to that can come from modeling studies”, Xinhua news agency quoted Katherine O’Brien, director of WHO’s Department of Immunization, Vaccines and Biologicals, as saying at a virtual briefing on Friday.