Coronavirus deaths are rising in nearly two-thirds of American states as a winter surge pushes the overall toll toward 400,000 amid warnings that a new, highly contagious variant is taking hold.

The U.S. government has already curbed travel from some of the places where the new variants are spreading — such as Britain and Brazil — and recently it announced that it would require proof of a negative COVID-19 test for anyone flying into the country.

But the new variant seen in Britain is already spreading in the U.S., and the Centers for Disease Control and Protection has warned that it will probably become the dominant version in the country by March. The CDC said the variant is about 50% more contagious than the virus that is causing the bulk of cases in the U.S.

While the variant does not cause more severe illness, it can cause more hospitalizations and deaths simply because it spreads more easily. In Britain, it has aggravated a severe outbreak that has swamped hospitals, and it has been blamed for sharp leaps in cases in some other European countries.

As things stands, many U.S. states are already under tremendous strain. The seven-day rolling average of daily deaths is rising in 30 states and the District of Columbia, and on Monday the U.S. death toll surpassed 398,000, according to data collected by Johns Hopkins University — by far the highest recorded death toll of any country in the world. #WakeUpCLT #COVID19 #Coronavirus