Health care workers walk to the Salt Lake City Public Health Center after administering a COVID-19 test Monday, April 13, 2020, in Salt Lake City. For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough that clear up in two to three weeks. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia and death. The vast majority of people recover. (AP/Rick Bowmer)