The novel coronavirus is surging back into U.S. nursing homes, where it killed tens of thousands at the start of the pandemic and now once again threatens some of the people most vulnerable to covid-19, the disease caused by the virus.
The development is a discouraging result of widespread community transmission of the virus in many parts of the country and in hot spots where it is even less controlled. With staff — and in some cases patients and visitors — entering and leaving facilities, the community-acquired infection almost inevitably finds its way inside.
