Scientists are warning that Brazil 's uncontrolled coronavirus outbreak could threaten the global fight to end the pandemic. The more infectious, vaccine-dulling P1 variant that emerged there has already become dominant in the majority of the country's states, and there's no sign of it slowing down. 'This information is an atomic bomb' Dr Roberto Kraenkel, a biological mathematician with the Covid-19 Brazil Observatory, told the Washington Post. 'I'm surprised by ...