Researchers from the Netherlands have reported an extremely long Covid-19 infection in a man who died last year – and warn of the emergence of more dangerous variants of the coronavirus. The elderly man, who was immuno-compromised due to previous illnesses, was admitted to a hospital in Amsterdam in February 2022 with a Covid-19 infection, according to a statement. He was continuously positive for the coronavirus until his death in October 2023 for a total of 613 days. Other cases of very long infections in people whose immune systems were unable to adequately fight the virus have previously b…