title: Problems of the epidemiology of scleroma. 2. Some aspects of the problem of endemic focus formation.
mesh_terms: D000349:Africa; D001208:Asia; D002980:Climate; D004197:Disease Reservoirs; D004812:Epidemiologic Methods; D005060:Europe; D006801:Humans; D007711:Klebsiella pneumoniae / Q000302:isolation & purification; D009656:North America; D012226:Rhinoscleroma / Q000453:epidemiology* / Q000235:genetics / Q000276:immunology / Q000382:microbiology; D013020:South America; D014777:Virus Diseases / Q000382:microbiology