Journal of Microbiology

The Microbiological Society of Korea (한국미생물학회)
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Fowl Cholera Outbreak in Domestic Poultry and Epidemiological Properties of Pasteurella multocida Isolate

  • Woo Yong-Ku (Institute of Laboratory Animal Resources, Seoul National University) ;
  • Kim Jae-Hak (National Veterinary Research and Quarantine Services)
  • Published : 2006.06.01
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Abstract

Symptoms of fowl cholera including orofacial edema, swollen and edematous wattles and combs, and severe respiratory disorders were detected in domestic poultry in two broiler breeder farms: one located in Gyeong-gi Province (October, 2000) and the other in Chung-cheong-nam Province (March, 2001). Gram-negative, bipolar staining bacillus was easily found in a direct smear. The biochemical properties of isolates were examined using a standard diagnosis method, proving that they were 99.7% similar to the Pasteurella multocida (P. multocida: PM), a pathogenic and causative agent of fowl cholera (FC). As a result, an FC outbreak in domestic fowls was confirmed for the first time in Korea since 1942. Because FC was detected in broiler breeder farms for the first time in 59 years at the same time as an FC outbreak was confirmed in wild birds (October, 2000), our concern was focused on whether the PM strains that originated in wild birds were transmitted into poultry forms. The possibility was tracked down by comparing phenotypic and genetic properties between the two types of PM strains. PM strains of chicken origin showed prominent differences from the PM strains of wild bird origin in both phenotypic and genetic properties. An examination of the origin of the wild bird bacteria was conducted, but no evidence has been identified that PM strains from the wild bird were introduced into domestic poultry farms.

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