Abstract
Objective: To determine the type of cockroaches contaminated by bacterial
species and their antibiotic resistance in different hospitals of Hamadan city.
Methodology: This cross sectional study was carried out on 179 samples of
cockroaches collected from hospitals in Hamadan city, Iran. The body surface
was washed with physiological sterile serum and the the solution was centrifuged at 2000 rpm for five minutes. bacteria were identified using the phenotypic method. Antibiotic resistance of bacteria against various antibiotics was
checked with disk diffusion method. Data were analyzed using SPSS version
20 software. chi-square test was applied for significance. P value <0.05 was
regarded as significant.
Results: Out of 179 cockroaches, 117 (65.36%) and 62 (34. 64%) were American and German cockroaches respectively. In total, 173 (96. 64%) of them
were contaminated with bacteria. Three hundred and fourteen (76%) and 99
(24%) strains of bacteria were isolated from both types of cockroaches. E.
coli was the most common (119 cases) and Morganella was the lowest species found. Gram positive bacteria showed the highest antibiotic resistance to
Clindamycin with 106 (79.7%) and Tetracycline with 43 (32.33%) highest susceptibility. Gram-negative bacteria had the highest resistance to Amoxicillin
and the highest sensitivity to Norfloxacin.
Conclusion: Bacterial contamination of cockroaches in hospital environment
is an important concern in health care systems. Moreover, antibiotic resistance
observed in separated bacteria can enhance the pathogenicity of bacteria
Sasan Nazari, Farasat Habibi, Saman Nazari, Mansour Nazari, Seyed Mostafa Hosseini. (2020) BACTERIAL CONTAMINATION OF EXTERNAL SURFACE OF COCKROACHES AND THEIR ANTIBIOTIC RESISTANCE IN HOSPITALS OF HAMADAN, IRAN, Journal of Postgraduate Medical Institute, Volume 4, Issue 2.
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