FORT WORTH: The United States has seen a string of Covid-19 outbreaks tied to summer camps in recent weeks in around 40 states led by Texas, Illinois, Florida, Missouri and Kansas, in what some fear could be a preview of the upcoming school year.

In some cases, the outbreaks have spread from the camp to the broader community. The clusters have come as the number of newly confirmed cases of the coronavirus in the United States has reversed course, surging more than 60 percent over the past two weeks from an average of about 12,000 a day to around 19,500, according to data from Johns Hopkins University.