First Confirmed Coronavirus Reinfection Raises Immunity Concerns

A Hong Kong man has become the first confirmed patient to be reinfected with coronavirus, raising fresh concerns Monday that immunity to the potentially deadly virus may be short-lived.  A research team at the University of Hong Kong, led by Dr. Kelvin Kai-Wang, announced on Monday that a 33-year-old man who was first infected by SARS-CoV-2 …

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