Study of frequency of enterotoxin coding genes and antibiotic resistance pattern of methicillin-resistant Staphylococcus aureus isolates isolated from food samples supplied in Shahrekord County

Methicillin-resistant Staphylococcus aureus is the most important threats to human health due to its ability to cause a wide range of food poisoning, and its monitoring in food is important. The purpose of this study was to investigate the frequency of enterotoxin coding genes and the antibiotic resistance pattern of methicillin-resistant Staphylococcus aureus isolates isolated from food samples supplied in Shahrekord city. 450 food samplesincluding traditional dairy products, salad and nuggets were randomly collected from supply centers in Shahrekord city and transferred to the laboratory. The standard method was used to isolate staphylococcus and the diffusion disk method was used to evaluate antibiotic resistance .The results showed that the highest contamination with Staphylococcus aureus was related to dairy products (14%), salad (10.66%) and nuggets (2.2%). The prevalence of methicillin-resistant Staphylococcus aureus in dairy samples was 71%, salads 64.58% and nuggets 30%. The highest and lowest prevalence of genes were respectively related to SEA (39.24%), SEB (17.18%), SEC (14.49%), SED (2.27%) and SEE (5.88%). The results of antibiotic resistance showed that the highest resistance was related to gentamicin, sulfamethoxazole, and the lowest resistance was related to ampicillin and amikacin. Due to the abundance of methicillin-resistant Staphylococcus aureus and the simultaneous presence of several coding genes in dairy products, salad and nuggets, the need for health supervision on the production and supply of food storage increases, as well as the use of Antibiotics should be limited in cases of poisoning caused by Staphylococcus aureus.