Four Covid vaccines effective in reducing deaths against Delta variant: Bahrain Study
26 Aug 2021
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The four Covid-19 vaccines - Sinopharm, Pfizer, AstraZeneca-Covishield and Sputnic V were effective in reducing deaths in vaccinated people when compared to unvaccinated people prior to and during the period when the Delta variant became dominant in Bahrain, a Bahraini research has revealed.