physician ? - Goats were the source of infection.Р1897 E. Bang; Danish veterinarian ? -described intracelular pathogen causing abortion in cattle named “Bacillus abortus”.Р1918 A. Evans; American microbiologist ? -made the connection between Bacillus abortus and us melitensis & named it Bacteriaceae.РHistorical BackgroundР1920 Meyer and Shaw suggested BRUCELLAР1914 Mohler anism from liver & spleen of Pigs--B.suis.Р1957 B. neotome, 1963 B. ovis, 1966 B. canisРHistorical BackgroundРEpidemiologyРWorldwide zoonosis?Only 17 countries declared brucellosis free1986?Six species 1. B.abortus - mainly cattle 2. B.melitensis - sheeps & goats 3. B.suis - pigs 4. B. canis - dogs 5. B. ovis - sheep (not human pathogen)?6. B. neotomae - desert wood rat (not human pathogen)?B. melitensis -- mon worldwide
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