Second COVID booster: What to know about 4th shots as the BA.2 variant spreads
Here’s who gets a second booster, according to new guidance from the Centers for Disease Control and Prevention.
Since the beginning of the year, the BA.2 variant of COVID-19 has spread around the world, leading to major outbreaks in Europe and China. BA.2, a subvariant of omicron, is already widespread in America and is set to become the dominant strain of the virus here next month.