epa08362629 Volunteers of the NGO Open Arms perform emergency tests to determine whether there is a possible outbreak of the pandemic COVID-19 disease among patients at a nursing home in Barcelona, northeastern Spain, 14 April 2020. Despite almost all countries adopting specific measures to protect nursing and retirement homes from the ongoing pandemic of the COVID-19 disease caused by the SARS-CoV-2 coronavirus, they have become one of the main foci of infection, with their elderly residents constituting an at-risk group that is especially vulnerable to the virus' devastating spread. EPA/QUIQUE GARCIA