Beginning Tuesday, UW-Milwaukee and other University of Wisconsin System campuses are offering to the public and university employees a free rapid COVID-19 test . But medical experts warn the exam may need a follow-up. UW System Interim President Tommy Thompson served as secretary of the U.S. Department of Health and Human Services during part of the George W. Bush administration. The former Republican governor of Wisconsin has obtained from the Trump administration 250,000 COVID-19 tests called