Understanding BA.2’s rise across the U.S. and Oregon
The subvariant of Omicron called BA.2 is now the dominant strain of the COVID-19 virus in the United States, according to the Centers for Disease Control and Prevention (CDC). BA.2 is about 33% more contagious than BA.1 — the Omicron variant that caused the U.S.’s winter surge — and now represents more than 70% of […]