New research shows immunity from COVID-19 might not last as long as once thought after a 25-year-old man was reported to be the first person in the U.S. to contract the virus twice.
“His disease was worse the second time. So this is very unusual and this is a little bit concerning,” said Dr. Michael Teng of the University of South Florida.
According to The Lancet Infectious Diseases medical journal, the Nevada man contacted the virus in April and recovered — only to contract it again in June.
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