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Two strains of capsular serogroup B Pasteurella multocida isolated from avian hosts (swan and turkey) were evaluated for virulence based on lethality for turkey poults. Groups of poults were exposed intramuscularly to various concentrations of organisms of each strain. Both strains were virulent. The strain isolated from a turkey was highly virulent: all exposed poults died in less than 24 hours, including those exposed to only 79 organisms. This highly virulent strain was neither highly invasive nor highly infective: intrapharyngeal exposure with 7.9 x 10(6) organisms resulted in death of only one of five poults, and attempts to isolate the organism from pharyngeal mucosae and livers of surviving poults were unsuccessful. The high degree of virulence of a B capsular group strain isolated from a turkey indicates a disease-producing potential for members of this uncommon serogroup of P. multocida.
K R Rhoades, and
R B Rimler
October 1989,
Avian pathology : journal of the W.V.P.A,
K R Rhoades, and
R B Rimler
November 2017,
mBio,
K R Rhoades, and
R B Rimler
August 1980,
The Veterinary record,
K R Rhoades, and
R B Rimler
January 1974,
Avian diseases,
K R Rhoades, and
R B Rimler
January 1973,
Avian diseases,
K R Rhoades, and
R B Rimler
July 1995,
Veterinary microbiology,
K R Rhoades, and
R B Rimler
January 1994,
Avian diseases,
K R Rhoades, and
R B Rimler
September 1978,
Poultry science,
K R Rhoades, and
R B Rimler
January 1996,
Avian diseases,
K R Rhoades, and
R B Rimler
February 2018,
mBio,
