In this Oct. 17, 2020, file photo, Arizona Western College EMT Academy students Natus Humphrey, left, and Shayla Watson explain the procedure and hand out kits to participants in a drive-thru COVID-19 saliva test on the main campus at the school in Yuma, Ariz. Arizona on Thursday, Nov. 19, 2020, reported over 4,000 additional known COVID-19 cases, the most in a single day since July. The Department of Health Services also reported 19 additional deaths due to the coronavirus. (Randy Hoeft/The Yuma Sun via AP, File)
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PHOENIX — Arizona on Nov. 19 reported 4,123 additional known COVID-19 cases, the most in a single day since July.