Probably true which, possibly, means that the overall mortality rate (based upon the outcome of hospitalizations) is lower than reported.
The reported mortality rate is about 2%, which is calculated by dividing the number of dead by what is essentially the growth in numbers of sick. That’s just silly.
A mortality rate is the portion of those who get sick who will eventually die from it, or who will die from it in a defined time period. The only way to calculate that is to either compare the number of those who die to those who recover, or at the least to compare the results (death or recovery) for a given cohort. The first way there leads to calculations of about a 40% mortality rate for those who are sick enough to seek treatment. It is the proportion of those who actually get sick compared to those who seek treatment, as well as the issues with un-ascribed deaths which make those numbers highly uncertain.
In another post, using various assumptions we can see how the he mortality rate could be anywhere from 0.04%, up to that 40% or higher, which would only apply to China in its current conditions.