Often what we see is a sort of cyclical pattern where things worsen and so people stay home more. They are more vigilant about wearing masks. They skip the restaurants or the get-togethers. But as things improve people relax a little bit and incorporate some of those risky behaviors again and things can again accelerate.

Caitlin Rivers, an epidemiologist at the Johns Hopkins Bloomberg School of Public Health, commenting to NPR late last week for its report, “Current, Deadly U.S. Coronavirus Surge Has Peaked, Researchers Say.”