Single dose of Covid-19 vaccines have shown 92% efficacy in protecting against death, whereas with two doses it increased to 98%, the Centre said citing a study conducted by Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh among Punjab police personnel.
source https://timesofindia.indiatimes.com/india/1-covid-19-vaccine-dose-gives-92-two-98-protection-against-death-study/articleshow/84081743.cms
source https://timesofindia.indiatimes.com/india/1-covid-19-vaccine-dose-gives-92-two-98-protection-against-death-study/articleshow/84081743.cms
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