coronavirus within 48 days of first catching the illness, suggesting immunity might not last very long.The 25-year-old patient, in Washoe County, Nevada, USA, was infected with two distinct variants of the virus while testing negative in between.His second infection was more severe, with symptoms including fever, headache, nausea and diarrhoea, resulting in his hospitalisation.It is the first confirmed reinfection in the USA, and only the fifth worldwide.The patient has now been discharged from hospital.
He had no known health problems or immune defects that would make him more susceptible to contracting Covid-19.Dr Mark Pandori, from the University of Nevada, led a study into the man's condition for the Lancet Infectious Diseases.