Russia (bbabo.net), - Sometimes a PCR test shows a negative result even if a person has symptoms of coronavirus infection. This was stated by the infectious disease specialist, vaccinologist Yevgeny Timakov, explaining that this is possible if the analysis is taken on the wrong day, or an insufficient amount of material was collected during the test.

The "Omicron" strain can leave the nasopharynx very quickly and not be detected by tests, the doctor said in an interview with Sputnik radio. The infectious disease specialist advises limiting contact with other people when symptoms of infection appear, even if the analysis shows a negative result.

Active virus isolation in the Omicron strain occurs during the incubation period. "The average incubation period is two to three days, respectively, in seven days it will become clear whether a person has a coronavirus or not," the doctor said.

However, in each case, the period during which a person with COVID-19 is dangerous to others is individual, it depends on the severity of the disease. Timakov stressed that vaccinated people tolerate coronavirus infection more easily.

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