The recurring bleat of vaccine denialists is that COVID should be addressed through “herd immunity.” Well, OK, a vaccinated population has herd immunity, but that’s not what they mean. They mean herd immunity in the sense of the Black Plague—the people who didn’t die were immune.Apart from all the deaths caused by COVID infections in unvaccinated people, there’s the issue of long COVID. While its etiology is poorly understood, its reality is certain....
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