International experts have cautioned that early numbers may not tell the whole story. Case fatality rates may come down as officials discover milder cases who don't seek medical care.
"So I would think at tops it's 2% and it likely will go down when all the counting gets done to 1% or less. That's still considerable if you look at the possibility that you're dealing with a global pandemic," he added. Even so, flu has led to far more deaths than all of these viruses combined -- killing tens of thousands of people in the US each year -- due to its massive spread., all but five of which occurred in mainland China, where the worst of the outbreak is centered.
The contagious nature of the virus has also put medical workers at risk -- as of February 11, more than 3,000 hospital staff or other medics had been reported to have been infected with the virus, among whom 1,716 had been confirmed by nucleic acid tests. Of the confirmed cases, only a small number has resulted in death -- roughly 0.3%, according to the authors.
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That was well known since the onset of the virus. Having a lower mortality rate subsequently increase its spread.
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