U.S. COVID Cases Down Over 50 Percent Since Peak of Summer Resurgence

The average daily number of COVID-19 cases in the U.S. has continued to decline in the wake of the summer resurgence fueled by the Delta variant.

In the past week, the U.S. had an average of around 72,000 new cases of the virus each day, according to data collected by Johns Hopkins University. This represents a 58 percent drop in average daily cases from the peak of the COVID resurgence of around 172,500, which the U.S. reported on September 13.

The decline can largely be attributed to the increased rate of vaccination in the U.S. as a result of the growing number of vaccine mandates and the FDA's approval of the Pfizer dose. According to the CDC, 66 percent of Americans have received at least one dose of a COVID-19 vaccine. Around 58 percent are considered to be fully vaccinated, and 8 percent have received a booster shot.

covid cases decline
The average daily number of COVID-19 cases in the U.S. has continued to decline in the wake of the resurgence fueled by the Delta variant. Above, a picture taken on May 23, 2020 shows a laboratory technician holding a dose of a COVID-19 novel coronavirus vaccine candidate ready for trial on monkeys at the National Primate Research Center of Thailand at Chulalongkorn University in Saraburi. Mladen Antonov/AFP via Getty Images

This downward trend in cases has been consistent over the past several weeks. Newsweek previously reported that cases had dropped by 44 percent as of October 11 from a peak in September.

With these latest figures, some experts now seem hopeful about the immediate future and think that the U.S. will, at least, not see a resurgence on the scale of the one caused by the infectious Delta variant from the summer.

"Personally, I'm optimistic that this may be one of the last major surges, and the reason for that is because so many people have been vaccinated, and also because a lot of people have had COVID," said Dr. Arturo Casadevall, chair of molecular microbiology and immunology at the Johns Hopkins Bloomberg School of Public Health, CNBC reported. "We now have a lot of immunity in the population."

While the drop in cases can be seen in every part of the country, the South has seen the sharpest decline after being hit the hardest by the Delta variant. Florida, once called by many the epicenter of the recent COVID resurgence, is now ranked in one of the CDC's lowest categories for risk with just shy of 13,000 new cases in the last week—well below most states with similar populations.

Despite this promising trend, a new variant, dubbed "A.30," has scientists concerned after cases were observed in Sweden, Angola and the U.K. Officials in Germany warned that A.30 appears to have higher resistances to the Pfizer and AstraZeneca vaccines.

"Altogether, our observations suggest that A.30 has a clear advantage over other SARS-CoV-2 variants [...] but this advantage shrinks when antibody levels are high," Markus Hoffmann, an infectious disease researcher and a lead author of an A.30 study, told Newsweek in a statement. "Thus, achieving and maintaining high neutralizing antibody levels, e.g. by mixed-match-vaccination or additional booster shots, represents a good defense strategy against A.30 and other variants with high ability of antibody evasion."