Latest antibody study in California showed that apparently there were 50 to 85 people that had had the virus for every 1 confirmed case. All of those people presumably had no symptoms (or at least not enough to ever bother getting tested). Meaning the fatality rate is 50 to 85 times lower than previously thought.

There had been 900 confirmed cases in this county. Now they estimate the actual number of cases in this county to have been between 48,000 and 81,000.

https://www.medrxiv.org/content/10.1....14.20062463v1