A resident climbs over a barricade around a neighborhood sealed off due to the coronavirus outbreak in Wuhan, central China's Hubei province, Thursday, April 2, 2020. For most people, the new 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. (AP Photo/Ng Han Guan)