Is virus blowing in the Asian wind?
US: https://covid.cdc.gov/covid-data-trac…
BA 4, 5.4%
BA 5, 7.6%
BA.4 and BA.5, first detected in South Africa, early 2022
Now, at 13% of cases
Last week, 7.5% of cases
Probably mostly immune escape
US, new omicrons
