Negative Nancy,

She’ll be the first to tell you, she’s not the only one. This extremely detailed serologic study of 74 patients with active COVID-19 in China (half symptomatic / half not) demonstrates a disheartening median duration of viral shedding of 19 days among even the asymptomatic (IQR 15-26 days!). More disheartening is that 40% (12/30) of asymptomatic, and 13% (4/31) of symptomatic, patients became seronegative for tested IgG antibodies by 8 weeks. | Long, Nat Med 2020


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