Frequency of Resistance and Susceptible Bacteria Isolated from Houseflies

  • B Davari Department of Parasitology, School of Medicine, Medical University of Kurdistan, Sananadaj, Iran
  • E Kalantar Liver and Digestive Research Center, Tohid Hospital, Medical University of Kurdistan, Sananadaj, Iran
  • A Zahirnia Department of Parasitology, School of Medicine, Medical University of Hamedan, Hamedan, Iran
  • SH Moosa-Kazemi Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Iran
Keywords: House fly, bacterium, antibacterial resistance, hospitals, slaughterhouse,

Abstract

Background: In this study, we determine the vector competence of Musca domestica with reference to the transmis­sion of susceptible and resistance bacterial strains in hospitals and slaughter house in Sanandaj City, west Iran.Methods: Totally 908 houseflies were collected to isolate bacteria from their external body based on standard proce­dures.Antibiotic susceptibility testing was performed by Kirby-Bauer disc diffusion method on Mueller Hinton agar based on recommendations of CLSI (formerly the National Committee for Clinical Laboratory Standards).Results: From collected houseflies, 366 bacteria species were isolated. The most common isolated bacterium at hos­pitals was Klebsiella pneumoniae 43.3% (n= 90) followed by Pseudomonas aeruginosa 37% (n= 77), while that of slaughterhouse was Proteus mirabilis. 29.1% (n= 46) followed by Citrobacter freundii 28.4% (n= 45). Among all the isolates from hospitals, cephalexin, chloramphenicol, ampicillin, and tetracycline, resistance rates were above 32.5% and gentamicin expressed the highest susceptibility among all the isolates from hospitals. It is worth to note that K. pneumoniae showed 61% and 44.5% resistance to cephalexin and chloramphenicol respectively. Similarly, all iso­lates from slaughterhouse were more than 28% and 30% resistant to cephalexin and chloramphenicol respectively. Surprisingly, among all the isolates, Citrobacter freundii were highly resistant to gentamicin.Conclusion: Houseflies collected from hospitals and slaughterhouse may be involved in the spread of drug resistant bacteria and may increase the potential of human exposure to drug resistant bacteria.

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How to Cite
1.
Davari B, Kalantar E, Zahirnia A, Moosa-Kazemi S. Frequency of Resistance and Susceptible Bacteria Isolated from Houseflies. J Arthropod Borne Dis. 4(2):50-55.
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