In this handout photo provided by 10 Downing Street, Britain’s Prime Minister Boris Johnson claps outside 11 Downing Street to salute local heroes during Thursday’s nationwide Clap for Carers NHS initiative to applaud workers fighting the coronavirus pandemic, in London, Thursday, April 2, 2020. 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. (Pippa Fowles/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.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.(Pippa Fowles/10 Downing Street via AP)