The authors report that there were between 13.2 million and 16.6 million more deaths than expected in 20. Msemburi and colleagues set out to estimate excess deaths from COVID-19 for every country in the world. But it is hard to find a universally effective way to measure excess mortality 4, 5, because there are substantial variations in underlying mortality trends and data availability across populations. For this reason, excess mortality - defined as the difference between all observed and expected deaths in a given period - is considered the gold-standard approach for estimating the mortality toll of short-term events 2, 3. ![]() This lack of data makes it challenging to quantify the mortality toll of short-term events, such as wars and natural disasters, as well as pandemics. Many deaths from COVID-19 went undetected in official reports from 20, because of limited testing capacity and misclassification of causes of death. Read the paper: The WHO estimates of excess mortality associated with the COVID-19 pandemic ![]() 1 present these estimates in more detail. In May, a team of researchers led by the World Health Organization (WHO) and the United Nations Department of Economic and Social Affairs published the first results from their attempt to estimate global, COVID-19-related death rates. Knowing how COVID-19 affects global mortality rates is crucial if we are to understand the factors that govern its spread and severity, and to be able to evaluate the effectiveness of government responses to the pandemic.
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