A municipality worker wearing a protective suit sprays water, backdropped by the Ottoman-era Mecidiye mosque and the "July 15th Martyrs’ bridge, formerly known as Bosporus Bridge, over the Bosporus Strait, separating Europe and Asia, in Ortakoy square in Istanbul, amid the coronavirus outbreak, Monday, March 23, 2020. The COVID-19 illness causes mild or moderate symptoms in most people, but severe symptoms are more likely in the elderly or those with existing health problems. (AP Photo/Emrah Gurel)