Covid-19 cases are on the rise in the United States again. But this time, the story is more complicated than it was in previous waves.
Since early January, when the United States hit a peak of 260,000 new cases every day on average, case numbers have been in more or less constant decline. Tens of millions of people were inoculated against Covid-19 in the following months. By late June, the country was averaging just 11,000 new cases per day.
But as of July 18, the US is seeing more than 31,000 new cases daily on average, nearly triple the case levels of just a few weeks ago.
So far, hospitalizations have not increased as much: They’re up about one-third compared to two weeks ago. Deaths, likewise, are still comparatively low: a seven-day average of…