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PubMed2002

Treatment of experimentally induced Pasteurella multocida infections in broilers and turkeys: comparative studies of different oral treatment regimens.

Experimental fowl cholera was induced in 60 healthy 10-week-old broiler chickens and 8-week-old turkeys by intramuscular inoculation with approximately 80 colony-forming units (cfu) of Pasteurella multocida X-73 strain and with approximately 70 cfu of P. multocida P-1059 strain, respectively. This method of infection proved to be useful for evaluating the efficacy of anti-microbial medication, by measuring mortality, weight gain, pathological responses and frequency of re-isolation of P. multocida. The efficacies of two different dosing methods, continuous and pulse dosing, were compared. Using the continuous-dosing method, norfloxacin was administered to drinking water at 100 mg/l for 5 days in chickens. Efficacies were slightly improved compared with pulse dosing at 15 mg/kg bodyweight for the same length of time. The opposite was observed in turkeys, to the degree of control of mortality and maintenance of weight gain.

Administration, Oral↗
PubMed1990

[The effect of local and systemic immunization of suckling pigs on bronchoalveolar clearance and on intrabronchial infections with Pasteurella multocida].

In vivo investigations of bactericidal bronchoalveolar clearance of weaning pigs locally or systemically immunized with Pasteurella antigens exhibited clearly distinctive results, as early as 3 days after the last immunization. They differed from controls by significant increase in the elimination of the homologous Pasteurella multocida A wild strain. That increase in the clearance remains for 21 days and is specific only to the immunized capsular type. There are no relations of this result to the cytological findings of the lavage fluids and to results of the intrabronchial challenge infection. Frequency and severity of pneumonias were reduced by as little as 3 aerogenic immunizations with Pasteurella mutants.

Animals↗
PubMed1990

[Human respiratory tract infection by Pasteurella multocida subsp. multocida presumably derived from the cat].

Pasteurella multocida is a Gram-negative short rod-shaped bacteria that has been recognized as a pathogen of hemorrhagic septicemia and fowl cholera in the veterinary medicine. Infections by this microorganism as seen in the foreign literature vary widely from local infections due to bites and scratches by animals to general infections such as infections of the respiratory tract, sepsis, and meningitis. In Japan, reported cases of P. multocida infections are predominantly local infections, followed by respiratory infection. Recently, death of diabetic patients due to septicemia by this pathogen has also been reported. In this study, we experienced a case of respiratory tract infection in which the pathogen P. multocida subsp. multocida was suggested to have been transmitted from a pet cat by the agreement of the serotype of the bacterial isolates between the patient and the cat. This case was evaluated from the zoonotic viewpoint. The patient was a 68-year-old male who had been followed up since 1982 with a diagnosis of bronchiectasis. After his referral to our hospital, P. multocida subsp. multocida was isolated from his bloody sputum and, then, from the cat kept by the patient. The tow isolates were identical in terms of the biochemical properties, drug susceptibility profile, and serotype (-:1), and the derivation of P. multocida subsp. multocida infection from cat was established for the first time in this report. The incidence of P. multocida infections is increasing in Japan, and particular attention is considered to be needed about these conditions as zoonoses as indicated in "Preventive Measures against Zoonoses Derived from Pet Animals (Dog, Cat)", an official communication from the Ministry of Health and Welfare to related institutions in 1989. Also, to check whether the patient keeps any pet at the clinical inquiry is a practice of bacteriological importance in all fields of medicine.

Aged↗