Students wear masks on campus at the University of North Carolina in Chapel Hill, N.C., Tuesday, Aug. 18, 2020. The university announced that it would cancel all in-person undergraduate learning starting on Wednesday following a cluster of COVID-19 cases on campus. (AP Photo/Gerry Broome)

Students wear masks on campus at the University of North Carolina in Chapel Hill, N.C., Tuesday, Aug. 18, 2020. The university announced that it would cancel all in-person undergraduate learning starting on Wednesday following a cluster of COVID-19 cases on campus. (AP Photo/Gerry Broome)


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