Chronic brucellosis in the author's observations.
D000328:Adult; D002006:Brucellosis / Q000175:diagnosis* / Q000453:epidemiology / Q000266:history; D002908:Chronic Disease; D005260:Female; D049673:History, 20th Century; D006801:Humans; D008297:Male; D008875:Middle Aged; D011044:Poland