title: Seroreactions in detecting Yersinia enterocolitica and Yersinia pseudotuberculosis in the Gdańsk region, years 1973-1976.
mesh_terms: D049673:History, 20th Century; D006801:Humans; D011044:Poland; D012703:Serotyping / Q000266:history / Q000379:methods*; D014504:Urban Health / Q000266:history; D015007:Yersinia / Q000302:isolation & purification*; D015009:Yersinia Infections / Q000175:diagnosis* / Q000266:history; D015012:Yersinia pseudotuberculosis Infections / Q000175:diagnosis