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How long could I be contagious before a positive virus test?

 

October 2, 2020



How long could I be contagious before a positive virus test?

Studies have shown that people may be contagious for about two days before developing COVID-19 symptoms.

In fact, right before developing symptoms is when people are likely the most contagious, said Dr. Werner Bischoff, an infectious disease specialist at Wake Forest University.

People who never develop symptoms can spread infection, too. That's a problem because many people would never seek testing unless they developed symptoms or knew they'd been exposed.

But there's a more complicated part to this question: What if someone k...



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