Is a list of virus outbreaks comparing mortality rates for Ebola, H5N1, MERS and SARS with COVID-19 - the novel coronavirus - accurate? No, it's not: The comparison of the outbreaks is extremely misleading as it doesn't take into account the rate of infections, timeframes of the outbreaks and the rapid rise in the number of COVID-19 cases.
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The comparison chart has a number of factual errors regarding the virus mortality rates.
It is flawed to compare data from a currently unfolding outbreak to previous infectious diseases that have either effectively been eradicated or had the outbreak confined to a specific region.
Let's take Ebola, for example. There have been a number of outbreaks since the virus was first detected in 1976, according to the World Health Organization. The epidemics have been confined largely to the African countries, though there have been cases reported in other places.
"The average EVD (Ebola Virus Disease) case fatality rate is around 50" the WHO reported. "Case fatality rates have varied from 25% to 90% in past outbreaks."
The most recent Ebola outbreak, between 2014-2016, ended with a total of 28,600 cases and 11,325 deaths, the US Centers for Disease Control and Prevention reported.
With H5N1, known as avian influenza or "bird flu," the first cases date back to 1996, according to the National Institutes of Health.
In 2003, H5N1 re-appeared in east and southeast Asia, including Korea, Vietnam, Hong Kong, Japan and Thailand, the NIH reported. At that time, it had a high mortality rate of 60%, according to NIH. Between 2005 and 2012, cases continued to be reported globally. The CDC also reported a case in 2014 in the United States.
MERS or MERS-CoV, formally known as Middle East Respiratory Syndrome, was first detected in Saudia Arabia in 2012 and had since spread to several other countries, including the United States, according to the CDC. Cases have sporadically shown up since, with the most recent being in Qatar, WHO reported.
"About 3 or 4 out of every 10 patients reported with MERS have died," the CDC said in its MERS summary. That's a 30% to 40% mortality rate.
With SARS, known as Severe Acute Respiratory Syndrome, the first cases were identified in 2003.
According to the CDC Fact Sheet, 8,098 people worldwide became sick with SARS during the 2003 outbreak. Of those, 774 died.
"In the United States, only eight people had laboratory evidence of SARS-CoV infection," the CDC's fact sheet said.
We will not know for some time just how deadly the COVID-19 pandemic will be, considering the number of countries reporting cases continue to rise and the number of cases continues to climb, according to worldometer.com, which tracks the infection rate. Also, widespread testing has not been available, and symptoms can continue to develop in unsuspecting people who may not initially exhibit signs of the new virus.
The situation with COVID-19 is dire enough that President Trump declared a national emergency to combat the outbreak, and the World Health Organization deemed it a pandemic.
The takeaway? The list of comparisons of the so-called least deadly viruses is inaccurate. Lead Stories has debunked similar claims in recent weeks, including one that also used a so-called "least deadly" viruses chart.
Here are some of Lead Stories' most recent debunks of news and rumors surrounding the novel coronavirus:
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