The BA.2 subvariant and two new subvariants appear to be even more infectious.
The two, BA.2.12 and BA.2.12.1, were highlighted by New York State health officials last week, and accounted for more than 70% of new cases in central New York in March
A New York Times tracker shows an increase of 38% from two weeks ago
The country's average daily hospitalisation is now 14,936, down 6% from two weeks ago and the lowest since the pandemic began
The United States continues to lead the world with 80.6 million cases and 988,618 deaths, according to Johns Hopkins University data.