Prevalence and Antimicrobial Resistance Patterns of Escherichia coli in the Environment, Cow Dung, and Milk of Selangor Dairy Farms

The study investigates antimicrobial resistance (AMR) patterns and profiles of Escherichia coli (E. coli) from various sources, including soil, effluent, cow dung, and milk. It found a prevalence of 66.1% in eight dairy farms in Malaysia, with 360 isolates identified. 19.7% of the isolates showed AMR, with ampicillin showing the highest resistance (18.3%). 8.9% were multidrug resistant, and nine were positive for extended spectrum beta-lactamase screening. The study emphasizes the need for continuous surveillance and effective antimicrobial stewardship programs to regulate veterinary antimicrobial use.