Health
Modeling studies show 60-70 pct of population need to be immune to curb COVID-19 transmission: WHO – Xinhua | English.news.cn – Xinhua
GENEVA, Nov. 28 (Xinhua) — Modeling studies under certain conditions show that about 60 to 70 percent of the population need to be immune to curb or halt COVID-19 transmission, a World Health Organization (WHO) official said Friday.
Noting the WHO cannot give the exact number of “the proportion of the population that would need to be immunized,” Katherine O’Brien, director of WHO’s Department of Immunization, Vaccines and Biologicals, said during a virtual briefing that “the answer to that can…
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