According to estimates released by the US Centers for Disease Control and Prevention (CDC), 60 percent of all new US cases in the latest weeks are from the new subvariant of Omicron.
According to the report of Xinhua news agency, the new sub-variant is known as BA.2.12.1. It spreads more quickly than previous versions of Omicron.
Omicron’s new sub-variants accounted for about 3.4 percent of new COVID-19 cases in the country in March, according to CDC data released on Tuesday.
The figure rose to 31.8 percent in April, while the figure was recorded at 59.1 percent in May.
On average, more than 100,000 new cases are being reported in the US every day, according to CDC data.
Health experts have issued a warning of a rapid increase in infections.