Lab test confirms first case of coronavirus reinfection in the US

A young adult in Nevada was confirmed to have been infected with the coronavirus twice, marking the first confirmed case of reinfection in the US, and the fourth in the world, Livescience.com reported. 

This past week, researchers reported cases of reinfection in a patient in Hong Kong and two patients in Europe; but in all three cases, the patients either developed a milder form of COVID-19 or were asymptomatic the second time around, according to NBC News. 

But according to the new case study, the 25-year-old Nevada patient developed more severe symptoms the second time he was infected. His case was published as a preprint on the Social Science Research Network (SSRN) and hasn't yet been peer-reviewed. The researchers have submitted their paper to the journal The Lancet Infectious Diseases.