The cost of ‘natural’ herd immunity
“The cost of reaching herd immunity through natural infection would be very high,” write infectious-disease researchers Arnaud Fontanet and Simon Cauchemez. An effective vaccine is the safest way to subdue large coronavirus outbreaks through widespread immunity, they say in a sober overview of what’s at stake. They note that an “optimistic” herd immunity threshold of 50% would not be reached in the United States before “500,000–2,100,000 deaths”.Nature Review Immunology | 7 min read
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