The first known case of COVID-19 reinfection in the United States has occurred.<br />The 25-year-old man who was reinfected has no underlying health conditions to increase his risk.<br />He was infected with two distinct genetic strains within 48 days after testing negative in-between.<br />His second infection was more severe than the first, according to reports at UPI.<br />The man required hospitalization with oxygen support after his most recent infection.
