-Since late July, we have been conducting a rolling survey of American colleges and universities — including every four-year public institution and every private college that competes in N.C.A.A. sports — to track the number of coronavirus cases reported among students and employees. The survey now includes more than 1,900 colleges. Starting in 2021 the number of cases in 2021 is also included.
+Between July 2020 and May 2021 we conducted a rolling survey of American colleges and universities — including every four-year public institution and every private college that competes in N.C.A.A. sports — to track the number of coronavirus cases reported among students and employees. The survey now includes more than 1,900 colleges. Starting in 2021 the number of cases in 2021 is also included.