DNA microarray-based characterization and antimicrobial resistance phenotypes of clinical MRSA strains from animal hosts.

Background: Methicillin-resistant (MRSA) is a leading cause of severe infections in humans and animals worldwide. Studies elucidating the population structure, staphylococcal cassette chromosome types, resistance phenotypes, and virulence gene profiles of animal-associated MRSA are needed to understand spread and transmission.

Objectives: The objective of this study was to determine 1) clonal complexes and types, 2) resistance phenotypes, and 3) virulence/resistance gene profiles of MRSA isolated from animals in Switzerland.