European doctors warn rare kids' syndrome may have virus tie

Hospital workers hold placards with the names of their colleagues who have died from coronavirus as they take part in a protest calling on the British government to provide PPE (personal protective equipment) across Britain for all workers in care, the NHS (National Health Service) and other vital public services after a nationwide minute's silence to remember medical staff and key workers that have died from the coronavirus, at University College Hospital in London, Tuesday, April 28, 2020. (AP Photo/Matt Dunham)