Professor Sir Andrew Pollard said herd immunity from the Delta variant is "mythical."
Here's What You Need to Know: There is still little question that the existing vaccines are effective at preventing the delta variant’s transmission.
Professor Sir Andrew Pollard, the head of the Oxford Vaccine Group in the UK, told Parliament in August that reaching herd immunity was “not a possibility” with the COVID-19 Delta variant.
Pollard compared the Delta variant...
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