A New Study Suggests COVID-19 Reinfection Is Possible. Here’s What to Know
, leading to repeated positive tests. Viral sequencing, however, showed the Hong Kong patient was infected by two different strains of SARS-CoV-2, which suggests he indeed got sick twice.
By that, Iwasaki means that the man’s first infection likely protected him enough that he did not develop symptoms during his second infection. There’s no guarantee all patients’ immune systems will react that way, Iwasaki says, but it’s still a promising sign. It’s also not clear whether the man was contagious during his second brush with coronavirus. The amount of virus in his system suggested he could pass it to others, but there’s no evidence as to whether he did.
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