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More evidence why vaccine, herd immunity will not clear COVID-19 pandemic
The first case of COVID-19 reinfection in the United States has added weight to the debate on the possibility of a second wave of the pandemic.
WHO: 'We are nowhere close' to having the herd immunity needed to stop the coronavirus
Recent reports have suggested that herd immunity may be achieved when as little as 50 percent of the population is immune. Herd immunity occurs when enough of the population is immune to the coronavirus, either via exposure or vaccine, for transmission to wane.

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