[fab1an]

This could swing both ways alas.

The optimistic case would be how swine flu played out, where initial estimates for fatality where in the percentage range but ended up in the per mille dimension.

However, for SARS 1.0, it was initially estimated to have a fatality of 2% - the final number was over 10%.

It's simply too early to tell.

Unfortunately, the latest WHO report suggest there isn't that big of an iceberg of undetected cases, which would sadly mean a higher CFR.