A scoping review of antimicrobial resistance in the Australian dairy cattle industry

This study assessed the current evidence of antimicrobial resistance (AMR) in the Australian dairy cattle industry. The study retrieved 373 articles from two online databases and assessed the quality of the remaining data. The results showed that passive surveillance articles had a wider range of bacteria and antimicrobials investigated, while active surveillance articles included a higher number of bacterial isolates and sampling from healthy populations. There was an overall low level of clinical AMR across all articles. The prevalence of non-wildtype Escherichia coli, Salmonella spp., and Staphylococcus spp. was suggested for commonly used Australian veterinary antimicrobials. The prevalence of phenotypic AMR varied due to the health and age status of the sampled animals. Further surveillance is required to monitor future AMR risk within the industry.