For PCR testing, a smear is taken from the oropharynx, and if the virus is concentrated in the lower respiratory tract, a negative test result may be false. Minister of Health Maksyym Stepanov said this during a briefing broadcasted by 112 Ukraine TV channel.
"The reliability of the result is also affected by compliance with the conditions for selection and transportation of biological material to the laboratory. According to various sources, up to 20-25% of the results of PCR studies can be false-negative," he said.
According to them, as of this morning, 16,480,100 people infected with Covid-19 have been recorded in the world, of which 644,537 people suffered from the disease.
The first place is still the United States, where 4 million 178 thousand 27 people fell ill with coronavirus. The second position is taken by Brazil with 2,394,513 recorded cases.
India closes the top three in terms of the number of infected - there Covid-19 was confirmed in 1,385,635 people.