I don't know what the US advice is, but the English advice is "please don't visit hospitals unless you've been told to do so".
We have people who'll come out and test you if needed, and we have "drive through" testing stations.
Telephone 111 or your GP for advice.
https://twitter.com/DrSdeG/status/1233715830170562561?s=20
https://www.gov.uk/guidance/coronavirus-covid-19-information...