Duke University, which held in-person classes this semester, tested 6,000-plus undergraduates twice weekly for COVID-19 and reported a positivity rate well below 1%. (ASSOCIATED PRESS PHOTOGRAPHS)
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Duke University, which held in-person classes this semester, tested 6,000-plus undergraduates twice weekly for COVID-19 and reported a positivity rate well below 1%. (ASSOCIATED PRESS PHOTOGRAPHS)
