Advertisement: Arizona still has the highest transmission rate of the virus in the country, with 95 cases per 100,000 of the population, according to CDC data. Given the alarming numbers, the university will continue stage one of its reentry plan with in-person instruction for only essential courses at least through the week of Feb. 1, Robbins said. The spread of COVID-19 on campus From Jan. 15 through 24, UA administered 10,480 COVID-19 tests and found 206 positive cases for a positivity rating of 2%. “We can't be complacent just because the numbers are looking fairly reasonable, we're below the threshold of 5%,” said Dr. Richard Carmona, the reentry task force director and former U.S. surgeon general. “We still have a pandemic that's raging in our community, and we are number one in the country. Every single one of us needs to comply because we're all inextricably tied together.”