Detection of Bordetella bronchiseptica in Oropharynx Region of Pet and Kenneled Dogs by PCR and Culture and Evaluation of Antibiotic Susceptibility of the Isolates
2020
Afi, Fereshteh | Jamshidi, Shahram | Bokaie, Saied | Nayeri Fasayi, Bahar | Ashrafi Tamay, Iraj | Delrobaei, Moein | Zahraei Salehi, Taghi
BACKGROUND: Bordetella bronchiseptica is a gram negative pathogen of the respiratory tract in dogs, pigs, cats, horses, laboratory animals and human beings. OBJECTIVES: The goal of this study was detection of Bordetella bronchiseptica in oropharynx region of pet and kenneled dogs by PCR and culture and evaluation of antibiotic susceptibility of the isolates in Iran. METHODS: The samples were collected by sterile swabs from oropharynx region of 62 pet dogs (including 31 dogs with clinical respiratory disease signs and 31 dogs without clinical respiratory disease signs) and 62 kenneled dogs (including 31 dogs with clinical respiratory disease signs and 31 dogs without clinical respiratory disease signs). Bordetella bronchiseptica was detected by PCR and culture and antibiotic susceptibility of the isolates were evaluated. RESULTS: Based on the PCR results, Bordetella bronchiseptica was detected in 16.1% of pet dogs with clinical respiratory disease signs, 9.6% of pet dogs without clinical respiratory disease signs, 22.5% of kenneled dogs with clinical respiratory disease signs and 16.1% of kenneled dogs without clinical respiratory disease signs. On bacterial culture, Bordetella bronchiseptica was isolated from 3.2% pet dogs with clinical respiratory disease signs, 3.2% kenneled dogs with clinical respiratory disease signs and 6.4% kenneled dogs without clinical respiratory disease signs, none of the pet dogs without clinical respiratory disease signs was positive on bacterial culture. The isolates tested by the agar dilution method were susceptible to tetracycline, enrofloxacin, co-trimoxazole and doxycycline, moderately susceptible to ceftriaxone and resistant to ampicillin. CONCLUSIONS: This study has shown the high prevalence of Bordetella bronchiseptica infection in dogs in Iran. Bordetella bronchiseptica can infect the people who have contact with the affected pet dogs and those kept in overcrowded shelters.
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