title: Meningoencephalitis and other conditions associated with Histophilus ovis infection in sheep.
abstract: Histophilus ovis was isolated from 29 sheep in 20 flocks and 2 artificial insemination (AI) centres in southern New South Wales from 1984 to 1990. The clinical and pathological findings were consistent with previous reports and included polyarthritis (7 flocks), epididymo-orchitis (5), meningoencephalitis (3), pneumonia (3), septicaemia (2), mastitis (1) and metritis (1). Six sheep had meningoencephalitis, a syndrome not previously associated with H ovis infection in sheep, which was similar pathologically to thromboembolic meningoencephalitis in cattle, caused by the related organism, Haemophilus somnus. H ovis was isolated from the semen of 12-month-old rams in a flock that had polyarthritis due to H ovis, in 4-month-old ram lambs and from the uterus of a ewe in a flock that had sporadic cases of H ovis septicaemia.
authors.affiliation: New South Wales Agriculture, Regional Veterinary Laboratory, Wagga.
authors.forename: A W
authors.initials: AW
authors.lastname: Philbey
authors.forename: J R
authors.initials: JR
authors.lastname: Glastonbury
authors.forename: J T
authors.initials: JT
authors.lastname: Rothwell
authors.forename: I J
authors.initials: IJ
authors.lastname: Links
authors.forename: J E
authors.initials: JE
authors.lastname: Searson
mesh_terms: D000818:Animals; D001170:Arthritis, Infectious / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D016470:Bacteremia / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D001921:Brain / Q000382:microbiology / Q000473:pathology; D004196:Disease Outbreaks / Q000662:veterinary*; D004823:Epididymitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D005260:Female; D006090:Gram-Negative Bacteria / Q000145:classification / Q000302:isolation & purification*; D016905:Gram-Negative Bacterial Infections / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D008297:Male; D008413:Mastitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D008590:Meningoencephalitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D009517:New South Wales / Q000453:epidemiology; D009920:Orchitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D011014:Pneumonia / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000473:pathology