A 61-year-old man being treated for cancer has died of mpox (formerly called monkeypox) at Donostia University Hospital in San Sebastián, in Spain's Basque Country, after apparently catching the virus from a roommate being treated for an infectious illness, El País reports. The case is notable because it points to possible in-hospital transmission of a virus usually spread through close contact, and it is especially dangerous for patients with weakened immune systems. The details of the infection and the hospital's response are not fully set out in the source.