Epidemiologists use metrics called infection fatality ratio, case fatality ratio, and deaths per capita to understand how many people are dying among those who are infected.
spurring confusion and questions about what it means to have a"good" death rate and where the U.S. really does stand relative to other countries.
The term death rate and mortality rate are often used interchangeably, but neither of these terms carries much significance. Instead, epidemiologists use metrics called infection fatality ratio, case fatality ratio, and deaths per capita to understand how many people are dying among those who are infected.
The problem is, we don't know the true infection fatality ratio in the United States because in many regions, only people with symptoms receive a test. Right now, the CDC's best guess is that the IFR is 0.0065, meaning that fewer than 1% of all people infected with the coronavirus -- regardless of whether they have symptoms -- die from the disease.The next best estimate is the case fatality ratio , a metric that is used often in literature and by the media.
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