The United States last week reported a 23% drop in new cases of COVID-19 and a 16% fall in the number of people hospitalized with the virus, with both figures declining for a fifth week in a row.
The progress against the virus, however, is threatened by several new variants, experts said, adding that face masks and social distancing measures were still very much needed.
About 4% of cases in the country are related to a more contagious variant first detected in the United Kingdom, according to Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention.
“We have projections that it may be the dominant strain by the end of March,” she told CBS’s “Face the Nation” on Sunday.
The country logged more than 639,000 new COVID-19 cases in the week ended Feb. 14, according to a Reuters analysis of state and county reports. Compared to the previous week, new cases increased in only three out of 50 states: Alaska, Nebraska and South Dakota.