[0] https://news.ycombinator.com/item?id=22167157 [1] https://news.ycombinator.com/item?id=22167881
So, how do we know that we have anywhere close to the right number of total patients?
Do you have any citations for these high numbers? Some statistical skepticism is important in matters of public concern.
And based on a WHO official's statements they found no evidence that there was a big number of unreported cases in China. https://www.statnews.com/2020/02/25/new-data-from-china-butt..., https://twitter.com/HelenBranswell/status/123233479099875328.... Which would mean that these numbers coming out of there are likely more correct than wrong.
"“What [the data] support is that sure, there may be a few asymptomatic cases … but there’s probably not huge transmission beyond what you can actually see clinically,” Aylward said.
The claim was quickly challenged by an infectious diseases expert who serves on a committee that advises the WHO’s health emergencies program."
In regards to the disease's lethality, even though most people will experience it as just a flu, between 10% to 15% of people experience it bad enough that they need hospital beds. If there's a generalized outbreak in the population like there was in China hospitals will be overloaded and general chaos will ensue, because hospitals in most countries aren't ready to deal with this kind of surge.