W.H.O. Panel Recommends AstraZeneca Vaccine Despite Variant Concerns फ़रवरी 10, 2021 byप्रगतिवादी मंच एक टिप्पणी भेजें The guidance came days after South Africa announced that it would halt its rollout of the AstraZeneca vaccine over concern about its efficacy against a new variant. source https://www.nytimes.com/2021/02/10/world/who-astrazeneca-vaccine.html
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