Pfizer’s Covid vaccine only 42% effective against ‘Delta’ variant; Moderna’s Is 76% effective, study suggests

By MANSUR SHAHEEN

FOR DAILYMAIL.COM

The current crop of COVID-19 vaccines may not be as effective against the Indian ‘Delta’ variant compared to the original strain of the virus, a new study suggests.

Researchers from the Mayo Clinic in Rochester, Minnesota, found that the Pfizer-BioNTech vaccine – the most commonly used shot in the U.S. – was only 42 percent effective against infection in July.

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https://www.dailymail.co.uk/health/article-9885013/Pfizers-Covid-vaccine-42-effective-against-Indian-Delta-variant-Modernas-76.html

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