A WHO official said that studies of models under certain circumstances show that about 60 to 70% of the population needs to be immune to curb or stop the transmission of Covid-19.
Catherine O’Brien, Director of the Department of Immunization, Vaccines and Biology at the World Health Organization, said during a virtual briefing, noting that the World Health Organization could not determine the exact number of the proportion of the population that needs vaccination, that “ The answer to this can come from studies. Models ”.
She emphasized that, “ These model studies under various circumstances concluded that about 60 to 70 percent of the population need to be immune, and this is assumed to be in order to achieve a reduction or halt to the transmission of the virus, ” adding that, “ This depends of course. On what it would be like to perform vaccines. ”
The number of Covid-19 cases worldwide has exceeded 61 million, while the number of deaths has exceeded 1.4 million, according to the latest data from Johns Hopkins University.