The Delta coronavirus strain is quickly becoming dominant in the U.S., raising concerns that outbreaks could hit vulnerable communities in the fall.
Currently, 10 percent of Covid-19 infections in the U.S. can be attributed to this strain, also called the B.1.617.2 mutation, but that proportion is doubling every two weeks, said Scott Gottlieb, former U.S. Food and Drug Administration commissioner. He added that this type is likely to become dominant in America and cause a new wave of infections amid a decline in vaccinations.
More than 309 million doses of the Covid-19 vaccine have already been administered in the U.S., but certain regions are at risk. “I think in parts of the country where you have less vaccination especially in parts of the South,
there is a risk that this strain will cause more outbreaks,” Gottlieb said.
Nationally, 64.4 percent of adults have received at least one dose of the vaccine, but rates are much lower in some states. Less than half of adults living in Alabama, Louisiana, Mississippi and Wyoming have received at least one dose of the Covid-19 vaccine, according to the Centers for Disease Control and Prevention.