WASHINGTON - The Biden administration is calling on people to exercise renewed caution about COVID-19, emphasizing 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 country.The new variants, labeled BA.4 and BA.5, are offshoots of the omicron strain that has been responsible for nearly all of the virus spread in the U.S.
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."Currently, many Americans are under vaccinated, meaning they are not up to date on their COVID-19 vaccines," said Dr.
Rochelle Walensky, director of the Centers for Disease Control and Prevention. "Staying up to date on your COVID-19 vaccines provides the best protection against severe outcomes."Walensky said the U.S.
has seen a doubling in the number of hospitalizations due to COVID-19 since April, reflecting the spread of the new subvariants, though deaths have remained steady around 300 per day.Dr.