Protsenko said that you can miss the onset of the destructive effect of the coronavirus, since "even with the presence of a covid clinic, PCR can be negative."

"False negative responses to this test are recorded in almost 30% of cases," the doctor said.

According to him, these are world statistics.

Earlier, the head of Rospotrebnadzor, Anna Popova, said that the duration of the PCR tests would be limited to 48 hours due to the omicron coronavirus strain.