Researchers estimate that as many of 76 percent of Manaus residents were infected with Covid-19 by Oct 2020—a proportion that technically exceeds the threshold for population immunity. So why is the city struggling to survive a second wave?
— Read on www.forbes.com/sites/williamhaseltine/2021/01/22/this-devastating-covid-19-outbreak-in-brazil-is-a-warning-for-the-rest-of-the-world/
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