The Biden administration is calling on people to exercise renewed caution about COVID-19, emphasising the importance of getting booster shots for those who are eligible and wearing masks indoors as two new highly transmissible variants are spreading rapidly across the United States.
The new coronavirus variants, labelled BA.4 and BA.5, are offshoots of the Omicron strain that has been responsible for nearly all of the virus spread in the US and are even more contagious than their predecessors. White House doctors stressed the importance of getting booster doses, even if you have recently been infected.
