Rio de Janeiro’s world-famous carnival parade, scheduled for February 2021, has been postponed indefinitely, the samba schools that organise the event announced on Thursday, adding that it would probably not take place until a vaccine was found. Al Jazeera reports that Brazil is dealing with the world’s worst outbreak of COVID-19 after the United States, and the Rio Carnival, which draws millions of domestic and international tourists to the beachside city every year for an extended festival of tightly packed crowds dancing through the streets and flocking to the city’s iconic “Sambadrome” for enormous parades and all-night partying, would pose a huge risk.