lazaretto
n//ˌlæzəˈɹɛti//lasarett
(also, figuratively) A building such as a hospital, or occasionally a ship, used to temporarily isolate sick people to prevent the spread of infectious diseases; a quarantine. [from early 17th c.]
A place reserved for people with infectious diseases (especially leprosy or plague) to live on a long-term basis. [from mid 16th c.]