3/13/2020: The most significant fact presented at the news conference was the low incidence of positive tests on those with respiratory conditions in Italy. If I heard correctly, it was 2-3%. This means that the coronavirus was an infrequent cause of “flu and cold” like symptoms of people seeking testing.
It also has been reported that early testing on ship staff had false positive testing. This means that they did not at the time have symptoms nor later developed symptoms. The test reported they had the virus, but no disease symptoms.
Bottom line: We are still in the learning phase with a pandemic of this new virus. I think this is a great dress rehearsal should something more severe occur.