EFESao Paulo, Brazil

Authorities in Sao Paulo, Brazil's most populous city, on Wednesday announced new measures to try and prevent the spread of Covid-19 with an eye toward Carnival, given that recent spike in coronavirus cases to record levels nationwide.

On Tuesday, Brazil registered a record 137,103 newly detected cases within the past 24 hours, according to official figures, with 351 deaths, far below the 4,249 deaths registered on April 9, 2021, for instance.