"If a person has just been in contact with a patient and begins to get sick himself, then a PCR test should be done," Sputnik quotes Timakova.

A PCR test should be done in the first two weeks of illness, then the body should be checked for antibodies.

According to the specialist, antibodies begin to form on the 7-10th day of illness.

Also, PCR should be taken after an illness.

On October 25, 550 thousand tests were carried out in Russia per day to detect coronavirus infection COVID-19.