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a medical institution in military units in the USSR that provides inpatient treatment for persons who do not need specialized treatment in a hospital.
In some states a lazaret is a medical institution for specialized inpatient treatment. In the Middle Ages a lazaret (lazaretto, or lazar house) was the name for a refuge for persons afflicted with leprosy (which was called St. Lazarus’ disease in some countries). In Russia lazarets appeared in the 18th century, and the term was used along with the term “hospital” to designate the same type of medical establishment; the two concepts became differentiated in the 19th century.