Professor Philip Nolan has outlined why tests for Covid-19 can sometimes fail to detect cases of the virus. He also said that a close contact of an infected person has 'about a one in 10 chance' of having contracted the disease.
He also said that a close contact of an infected person has "about a one in 10 chance" of having contracted the disease.
"First, at any given time, about 30% of infected people are in the latent period, the three to five days after they have been infected, where the virus is multiplying inside their cells and is not yet detectable. "A 'not detected' test does not prove you do not have the virus; it does not show you are 'Covid-free’," he warned.
— Professor Philip Nolan September 26, 2020 His explanation follows a revelation yesterday by a Donegal GP that close contacts who receive a negative Covid-19 test are not getting the message that they need to restrict their movements for 14 days.
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