STUDY OF PATHOGENIC BACTERIA ISOLATED FROM FLIES IN SARI CITY, NORTH OF IRAN

Background and Aim:Flies are found worldwide, occurring nearly every place inhabited by human. They may transmit disease organisms to people. This study was done to isolate some of bacteria from medically important flies (Lucilia sericata & Musca domestica genera) in Sari City and determine their antibiotic susceptibility pattern.Methods:In this experimental study, totally 2020 house flies (Musca domestica) and 600 blow flies (Lucilia sericata) were collected from 3sites of Sari city. Bacteria on the external surface and digestive system of each fly were identified by using standard tests based on Bergay, s technique. Antibiotic susceptibility test was performed by disc diffusion method based on CLSI.Results:Most of isolated bacteria from Lucilia Sericata & Musca domestica in the current study are pathogenic. The most common isolated bacteria were E. coli (19% in M. domestica & L. sericata) and Staphylococcus aureus (15.8 % in L. sericata & 8.45% in M. domestica). Antibiotic resistance was found in isolated.Conclusion:This study showed that flies can spread pathogenic bacteria with antibiotic resistance in human being, directly or as a vector. Therefore, their population should be controlled in North of Iran.

کلیدواژه ها:

Musca domestica ، Lucilia sericata ، Medically important ، Antibiotic resistant Bacteria ، Iran