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LONDON, may 5 – RIA Novosti, Maria Tobacco. The large difference in death rates from coronavirus in different countries is related to several factors, the main of which are the lack of systematic testing, as well as different methods of calculation, told RIA Novosti the British scientist-epidemiologist, member of the research group The Vaccine Confidence Project at the London school of hygiene and tropical medicine Daria Church.

“the Lack of systematic testing in most countries is a major factor in differences in mortality rates. In countries where testing only those who are admitted to the hospital, that is patients with obvious symptoms and don’t test asymptomatic, the mortality rate seems much higher than in countries where testing is broader. To get an accurate mortality rate, need extensive testing,” said Church.

in addition, the expert noted that there is a difference between the mortality rate among reported cases and the overall mortality rate from the disease. The second factor – is always approximate because precise counting is possible only when full testing population. In different countries people think differently, so to compare such statistics at this stage difficult.

“the statistics must be approached with caution, says Church. For example, it can not get the dead who have not been tested and which as the cause of death recorded COVID-19, and something else. And these patients in case of overload of the health system can be a lot. And most importantly – mention mortality in individual countries, it is necessary to consider the number of people, because it was dead in two different countries can have the same number, but in relation to the size of the population coefficient may be different”, she said.

the Exact level of mortality from the infection with no reference to the number of reported cases in different countries has not been finally determined. In February, the world health organization estimated the mortality rate of 0,94%, of the Oxford centre for clinical epidemiology evaluates the figure of 0.1% and 0.6%. There are other rating.

Current data on the situation of COVID-19 in Russia and the world presented on the portal stopmanager.of the Russian Federation.