Technology
Is the herd immunity dream dead? – Sydney Morning Herald
The Delta variant is so contagious, the argument goes, that it pushes herd immunity out of reach.
Herd immunity has become one of the pandemics tortured terms. I have taken to grimacing when I read it.
What does it really mean? Most epidemiologists think of herd immunity as the level of immunity needed in a country so that a virus can no longer widely…
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