Two cases of reinfection in USA, second infection worse than first

A 25-year-old man from Nevada and a 42-year-old man in Virginia experienced second bouts of COVID-19 about 2 months after they tested positive the first time. Gene tests show both men had two slightly different strains of the virus, suggesting that they caught the infection twice, medscape.com reported Tuesday.

Researchers say these are the first documented cases of COVID-19 reinfection in the US. About two dozen other cases of COVID-19 reinfection have been reported around the globe, from Hong Kong, Belgium, the Netherlands, India, and Ecuador. A third US case, in a 60-year-old in Washington, has been reported but hasn't yet been peer reviewed.