Omicron Subvariant Estimated to Account for Majority of COVID-19 Cases in US

This scanning electron microscope image shows SARS-CoV-2 (round blue objects), also known as CCP virus, the virus that causes COVID-19, emerging from the surface of cells cultured in the lab that were isolated from a patient in the United States. NIAID-RML via Reuters

The BA.2 Omicron subvariant is being pegged as being responsible for causing more than half of the COVID-19 cases in the United States, according to America’s public health agency.

Estimates from the Centers for Disease Control and Prevention (CDC) updated March 29 had BA.2 as being behind 55 percent of the cases recorded in the week ending March 26.