The COVID-19 variant has mutations that may make vaccines less effective, and a "spring surge" of disease is possible.
A mutated strain of the COVID-19 virus, first detected in the U.S. in a traveler to SFO, is increasingly appearing across the country.
A March 19 report from the U.S. Centers for Disease Control and Prevention detailed the rise of the COVID-19 BA.3.2... [2212 chars]