"Severe case" is clinically defined in the source material on page 12 if you're interested. I'm not sure o2 sat or respiratory rate is particularly meaningful to readers on here so I didn't include it.

I'm not sure where you're getting "no big deal" from, I never said or implied anything of the sort. It appears to be comparable to influenza, which is serious and warrants a serious response, but not cause for any panic. Flu already poses a serious risk to the elderly, yet we don't see widespread panic year over year.

Mild pneumonia is also known as atypical/walking pneumonia. In the source material they state that they classify mild pneumonia as a moderate infection. See figure 5. Most cases of atypical pneumonia don't require hospitalization, as the primary characteristics are just cold symptoms that don't go away in a week.

We're going to start seeing more data coming out of South Korea in the coming weeks that is likely to be far more reliable than what the CCP would show. Currently the fatality rate appears to be ~0.5% and trending downward. [1]

[1] https://www.cdc.go.kr/board/board.es?mid=a30402000000&bid=00...