The Centers for Disease Control and Prevention said on Friday that the coronavirus epidemic is now the deadliest on record.
It said more than 12.2 million people have been exposed to the virus, with 3.8 million deaths and an estimated 2.2 billion infections.
The CDC also said the number of new cases is now about 2.5 million, about 20% of the number recorded in the first six months of the year.
In the first two months of 2017, the CDC said, about 7.4 million people had been exposed.
The new figures were released on the same day the world’s top health experts warned that COVID is “the most significant threat to public health since World War II,” and urged the United States to ramp up efforts to contain the virus.
The CDC said that of the 9,973 new infections in the United Kingdom, 1,527 people died from the virus in the month of December alone.
It cited data showing that more than 60% of coronaviruses cases were in people aged 45-64, and about 40% in people in the 75-84 age group.