A variant of the coronavirus SARS-CoV-2 called P.1 seems to be able to reinfect people who already recovered from COVID-19, despite whatever protections their immune systems built up. The variant, which was discovered and began circulating in Brazil back in December, poses a new threat that has scientists worried about the potential for yet another major wave of the coronavirus, The New York Times reports. It’s currently surging in the city of Manaus, but has also spread to 24 countries as well as several US states. “It’s right to be worried about P.1, and this data gives us the reason...