COVID vaccine up to 96% effective on the Delta COVID-19 variants: study (effectiveness on original variant was 95% for Pfizer vaccine)
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COVID-19 vaccines made by AstraZeneca and the Pfizer-BioNTech alliance remain broadly effective against Delta and Kappa variants of the COVID-19 causing virus, which were first identified in India, according to a scientific study, underpinning a continued push to deliver the shots. The study by Oxford University researchers, published in the


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