Prevalence and antibiotic resistance pattern of Staphylococcus aureus isolated from milk in Udaipur (Rajasthan)

Abstract

Staphylococcus aureus is one of the most important food borne pathogen. The presence of enterotoxigenic S. aureus in milk is a serious concern for human health. Drinking contaminated milk with preformed toxins of S. aureus causes rapid onset of food borne illness. A total of 100 milk samples including pooled milk (n=25), vendors milk (n=25), pasteurized market milk (n=25) and individual cow milk (n=25) were collected randomly from different parts of Udaipur city, Rajasthan. The prevalence of S. aureus in pooled milk, vendors milk, pasteurized market milk and individual cow milk was 76% (19/25), 36% (9/25), 0% (0/25) and 56% (14/25), respectively. The overall prevalence was 42% (42/100). Antibiotic susceptibility test results revealed that penicillin G and ampicillin showed highest resistance (100%) in bacteria followed by erythromycin (30.95%) and methicillin (21.43%).