Here ya go:
“The World Health Organization (WHO) today estimated the overall fatality rate for SARS (severe acute respiratory syndrome) patients at 14% to 15%, significantly higher than previous estimates. The agency estimated the rate for people older than 64 years to be more than 50%.”
https://www.cidrap.umn.edu/news-perspective/2003/05/estimates-sars-death-rates-revised-upward
“From April 2012 till October 2022, a total of 2600 laboratory-confirmed cases of Middle East respiratory syndrome (MERS) were reported globally, with 935 associated deaths at a case-fatality ratio (CFR) of 36%. The majority of these cases were reported from Saudi Arabia, with 2193 cases and 854 related deaths (CFR: 39%).”
https://www.emro.who.int/health-topics/mers-cov/mers-outbreaks.html
Case fatality rate. Not mortality rate. And it is the WHO which you source, but which I question as to impartiality.
From WIKI, which is also not always impartial, but: "The 2002–2004 outbreak of SARS, caused by severe acute respiratory syndrome coronavirus (SARS-CoV or SARS-CoV-1), infected over 8,000 people from 29 countries and territories, and resulted in at least 774 deaths worldwide."
As a function of the world's population (death / mortality rate), not the reported cases (CFR), this was a tiny blip on the world's deaths, which the CDC's states amount to about one percent of a given population. What ended the 2002-2004 outbreak? It withered away, as viruses attenuate.
The 2002-2004 "event" was not a media event like this last three years. And the deaths attributed are extremely small by comparison to today's WHO pandemic.
This is an apples-and-oranges comparison. CFR versus mortality rate is a matter of data acquisition and aggregation.
At least "at least 774 deaths worldwide" or "935 associated deaths" is not worthy of being fit into a calculation of the actual mortality rate, so small a result would be found.
One reads from the UM report, " 'a more accurate and unbiased' method of estimation." Estimation is estimation. The number of times the word is used in the article is worth noting. Twenty plus years after an event, "estimation" and "more unbiased estimation" are amusing terms.
So in conclusion, the actual mortality rate for SARS CoV2 calculates as 0.0836 percent. The inverse, the rate of survival, is 99.916 percent.
In a world of almost 8,000,000,000 people, one can refer to a 2002-2004 putbreak and estimates of perhap 1,000 deaths, and quake in one boots. Or not. Because fear is a choice.