The BA.5 omicron subvariant still accounts for more than 4-of-5 COVID cases in the U.S., but two new subvariants have continued to gain ground in recent weeks.
The BA.5 omicron subvariant still accounts for more than 4-in-5 COVID cases in the U.S., but two new subvariants have continued to gain ground in recent weeks.the BA.5 omicron subvariant still is responsible for 83.1% of COVID cases in the United States as of Tuesday.
Even though that makes it by far the most dominant variant of the virus currently circulating in the United States, it also represents a continued decrease in that dominance as two other omicron subvariants emerge. According to CDC estimates, the BA.4.6 subvariant, a descendant of the BA.4 omicron strain, now is responsible for 11.9% of cases in the U.S., up from 10.9% a week ago.