We might not be sticking the tests far enough up people’s noses. Also, we don’t know how long active infection lasts.
suggesting they don’t have the coronavirus infection despite having symptoms that are completely consistent with what we know about the virus, including high temperatures and a telltale cough. Perhaps the most notable example of a false negative is Li Wenliang, an ophthalmologist in Wuhan, China, who brought COVID-19 to international attention.
Every virus has its preferred place in its host’s body. But the coronavirus “is a little sneakier than viruses we’ve seen in the past,” said, an associate clinical professor at the University of California, Davis. COVID-19 is primarily a disease of the lungs, but it also hangs out in the nasopharynx, a hard-to-reach cavity halfway between your nose and your throat.
False negatives may also be a matter of timing. “There’s a misconception if a person has COVID, the virus is all over the place,” Tran said. “That’s not true.” It mostly concentrates in the lungs, which is why some doctors have advocated for
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