I think there was some random testing there a week or two, that found 2.5% of the people carrying the virus. Now, that is the number of people who were infected at that moment, so it is a lower bound (some people might have been already healed and so no traces of the virus). However, with the disease having an exponential spread, the number of healed should be relatively small, pretty much negligible, so you can assume that 2.5% is more or less the correct number.With just over 1000 deaths nationally that makes a fatality rate the same or less than Flu? Seems highly unlikely.
The sample was a few hundred people though, and I am not sure how representative it was (for example, did they also do kids etc)?
30-40% is too good to be true.