Don’t know about the rate, but this was interesting - WHO putting together some info on the limited access they had.
This has the link to the PDF and Video of the press conference
https://www.reddit.com/r/China_Flu/comments/fbt49e/the_who_sent_25_international_experts_to_china/
5% of people who are diagnosed with Covid require artificial respiration. Another 15% need to breathe in highly concentrated oxygen - and not just for a few days. The duration from the beginning of the disease until recovery is 3 to 6 weeks on average for these severe and critical patients (compared to only 2 weeks for the mildly ill). The mass and duration of the treatments overburdened the existing health care system in Wuhan many times over. The province of Hubei, whose capital is Wuhan, had 65,596 infected persons so far. A total of 40,000 employees were sent to Hubei from other provinces to help fight the epidemic. 45 hospitals in Wuhan are caring for Covid patients, 6 of which are for patients in critical condition and 39 are caring for seriously ill patients and for infected people over the age of 65. Two makeshift hospitals with 2,600 beds were built within a short time. 80% of the infected have mild disease, ten temporary hospitals were set up in gymnasiums and exhibition halls for those.
The vast majority of those infected sooner or later develop symptoms. Cases of people in whom the virus has been detected and who do not have symptoms at that time are rare - and most of them fall ill in the next few days.
The most common symptoms are fever (88%) and dry cough (68%). Exhaustion (38%), expectoration of mucus when coughing (33%), shortness of breath (18%), sore throat (14%), headaches (14%), muscle aches (14%), chills (11%) are also common. Less frequent are nausea and vomiting (5%), stuffy nose (5%) and diarrhoea (4%). Running nose is not a symptom of Covid.
An examination of 44,672 infected people in China showed a fatality rate of 3.4%. Fatality is strongly influenced by age, pre-existing conditions, gender, and especially the response of the health care system. All fatality figures reflect the state of affairs in China up to 17 February, and everything could be quite different in the future elsewhere.
Healthcare system: 20% of infected people in China needed hospital treatment for weeks. China has hospital beds to treat 0.4% of the population at the same time - other developed countries have between 0.1% and 1.3% and most of these beds are already occupied with people who have other diseases. The most important thing is firstly to aggressively contain the spread of the virus in order to keep the number of seriously ill Covid patients low and secondly to increase the number of beds (including material and personnel) until there is enough for the seriously ill. China also tested various treatment methods for the unknown disease and the most successful ones were implemented nationwide. Thanks to this response, the fatality rate in China is now lower than a month ago.
Pre-existing conditions: The fatality rate for those infected with pre-existing cardiovascular disease in China was 13.2%. It was 9.2% for those infected with high blood sugar levels (uncontrolled diabetes), 8.4% for high blood pressure, 8% for chronic respiratory diseases and 7.6% for cancer. Infected persons without a relevant previous illness died in 1.4% of cases.
Whole lot more info from the report, including tables on ages, etc. at the link above.