give us at least some insight for that particular population and the health care of Japan who took passengers off & treated them as soon as they tested positive.
Out of 712 positive cases 10 have died so far. That equates to 1.4%. But there are still 115 active cases and 15 are in serious or critical condition, so that percentage is likely to go up.
Scroll down for the Diamond Princess
https://www.worldometers.info/coronavirus/#countries