. At the time, he explained that alpha was the dominant strain in the U.K.—until delta took over and essentially replaced it.
Now the delta variant accounts for more than half of new COVID-19 cases in the U.S., a CDC official told. Specifically, delta was responsible for 30.4 percent of cases between June 5 and June 19, but that number jumped to 51.7 percent between June 20 and July 3. In some areas of the country, delta accounted for an even larger share of COVID-19 cases.
The best way to keep yourself and your community safe from coronavirus variants, including delta, is to get a COVID-19 vaccine. Just over 67 percent of adults in the U.S. have received one vaccine dose, according to the most recentBut the worry is that those who aren’t vaccinated or can’t yet be are particularly vulnerable to delta. “It’s the unvaccinated people that we’re concerned about,” Dr. Fauci said in a.
Even those who are fully vaccinated may want to keep up with the other public health tools we have, such asand social distancing, to reduce their risk of getting or spreading the new variant. That may be especially useful in higher-risk situations, like indoor gatherings. The more that we are able to reduce the spread of this variant—and the virus in general—the more we can prevent the rise of even more worrying variants.
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