Your 10% serious/hospitalized is closer to the mark:
https://www.cnn.com/2020/03/09/asia/south-korea-coronavirus-intl-hnk/index.html
On a lighter note...getting real in Memphis:
https://twitter.com/HOT97/status/1237346021895790593
Great video from Memphis. That’s why we in the South love the South — it’s real!