A passer-by walks a dog Sunday, March 29, 2020, along a path in the Boston Common, in Boston. Many people are working from home while many businesses have closed indefinitely because of the coronavirus, leaving portions of the city nearly empty. 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/Steven Senne)

March 30, 2020