Diseases, Conditions, Syndromes

Rio tightens restrictions as COVID surges in Brazil

Rio de Janeiro announced new restrictions Thursday on bars, restaurants and beaches, seeking to contain a surge of COVID-19 that is pushing Brazil's hospitals to the breaking point.

Diseases, Conditions, Syndromes

Brazil neighbors limit travel to halt virus strain's spread

Brazil's neighbors are starting to restrict international travel amid concern about the spread of a new coronavirus variant that experts say may be more contagious and driving a second wave of infections.

Diseases, Conditions, Syndromes

Amazon city of Manaus may have reached 'herd immunity': study

The Brazilian city of Manaus, which was devastated by the coronavirus pandemic, may have suffered so many infections that its population now benefits from "herd immunity," according to a preliminary study.

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