The BA.4 and BA.5 omicron subvariants are now dominant in the U.S They pose a greater challenge to vaccine protection, but symptoms remain the same. A new version of omicron is dominant in the U.S. The coronavirus subvariant known as BA.5 accounted for nearly 54% of the country's Covid cases as of …
COVID-19 cases are continuing to surge across the Bay Area, driven largely driven by subvariants of Omicron. All nine Bay Area counties are now considered ‘high risk' for the community spread of COVID-19 by the Centers for Disease Control and Prevention.