Covid-19 reinfection detected in US patient; saliva tests endorsed

A case of coronavirus reinfection has been documented in a US patient from Reno, Nevada, according to doctors. The 25-year-old man tested positive for the virus in April after showing mild illness and then got sick again in late May, developing more severe Covid-19 symptoms

from Hindustan Times - world https://bit.ly/31BfJwq
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