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Johns Hopkins Coronavirus Resource Center This page was last updated on Wednesday, March 24, 2021 at 12:14 PM EDT.
How does mortality differ across countries?
One of the most important ways to measure the burden of COVID-19 is mortality. Countries throughout the world have reported very different case fatality ratios ? the number of deaths divided by the number of confirmed cases. Differences in mortality numbers can be caused by:
Differences in the number of people tested: With more testing, more people with milder cases are identified. This lowers the case-fatality ratio.
Demographics: For example, mortality tends to be higher in older populations.
Characteristics of the healthcare system: For example, mortality may rise as hospitals become overwhelmed and have fewer resources.
Other factors, many of which remain unknown.
For the twenty countries currently most affected by COVID-19 worldwide, the bars in the chart below show the number of deaths either per 100 confirmed cases (observed case-fatality ratio) or per 100,000 population (this represents a country?s general population, with both confirmed cases and healthy people). ...
