A health worker sprays disinfectant in an informal roadside market, in an attempt to halt the spread of the new coronavirus, in Lagos, Nigeria Tuesday, March 31, 2020 as the city faces a two-week lockdown with residents told to stay in their homes. The new coronavirus causes mild or moderate symptoms for most people, but for some, especially older adults and people with existing health problems, it can cause more severe illness or death. (AP Photo/Sunday Alamba)