Coronavirus symptoms: The progression from moderate to severe can occur very, very quickly
About 10-15% of mild-to-moderate patients progress to severe and of those, 15-20% progress to critical. Patients at highest risk include people age 60 and older and those with pre-existing conditions such as hypertension, diabetes and cardiovascular disease.
https://fortune.com/2020/03/08/coronavirus-symptoms-covid-19-lungs-nose-throat-cough/
NEW YORK
BREAKING: Ulster County Reports First Coronavirus Case
The man, who county leaders declined to identify, recently returned from France, where about 1,000 cases of the new virus had been identified by Sunday afternoon.
The man notified the Ulster County Health Department when he started to show symptoms and drove himself to a hospital on the departments advice, according to the Ulster County Executives Office.
Samples were taken from the man at the hospital, then tested at the Wadsworth Center in Albany
https://theotherhudsonvalley.com/2020/03/08/ulster-county-coronavirus/
Eight New Coronavirus Cases Tied to Hudson Valley Man Announced
https://theotherhudsonvalley.com/2020/03/05/eight-new-coronavirus-cases/