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Livestock-associated methicillin-resistant  Staphylococcus aureus  (LA-MRSA) has been reported to colonize and cause infections in animals as well as in humans. LA-MRSA isolates have only recently been identified in patients admitted to Kuwait hospitals. This study was conducted to characterize LA-MRSA isolates obtained from patients admitted to Kuwait hospitals. A total of 202 (7.1%) of 2,823 MRSA isolates obtained from clinical samples in 2016 and 2017 in 11 public Kuwait hospitals were assigned to lineages previously known to be associated with livestock. They were characterized using antibiogram,  spa  typing, and DNA microarray for the assignment of clonal complexes (CCs) and detection of antibiotic resistance and virulence determinants. Identification as putative LA-MRSA clones was based on the molecular definition inferred from DNA microarray. The LA-MRSA isolates consisted of CC96 ( N  = 31), CC97 ( N  = 169), and CC398 ( N  = 2). Isolates belonging to CC96 and CC398 were resistant to erythromycin and clindamycin mediated by  erm ( A ) and  erm (C). CC97 isolates were multiresistant to gentamicin, kanamycin, erythromycin, clindamycin, tetracycline, chloramphenicol, fusidic acid, trimethoprim, and ciprofloxacin and harbored  aacA-aphD ,  erm (A),  erm (C),  msr (A),  tet (K),  cat ,  fusC , and  dfrS1 . In total, 35  spa  types were identified among the isolates. CC398 isolates consisted of t899 and t034. Ten  spa  types were identified among CC96 with t11822 ( N  = 13) as the most prevalent. CC97 consisted of 26  spa  types with most belonging to t267 ( N  = 73) followed by t359 ( N  = 39). CC398 was composed of CC398-MRSA-IV and CC398-MRSA-V (PVL + ). CC96 belonged to CC96-MRSA-IV and CC96-MRSA-IV (PVL + ) Central Asian caMRSA/WA MRSA-119. CC97 consisted of six strains including CC97-MRSA-V ( fusC  + ), CC97-MRSA-IV WA MRSA-54/63, CC97-MRSA-V, CC97-MRSA-(V+ fus ), CC97-MRSA-( mec  VI+ fus ), and CC97-MRSA ( mec V/V T + fus + ccrAB 2). Whereas CC96 and CC97 isolates were identified in 2016 and 2017, CC398 isolates were detected only in 2016. This study identified four LA-MRSA clones among MRSA isolated from patients in Kuwait hospitals in 2016–2017 with CC97-MRSA-V ( fusC  + ) as the dominant clone. The presence of LA-MRSA with different genetic backgrounds suggests its independent acquisition from different sources.

Livestock-Associated Methicillin-Resistant Staphylococcus aureus in Patients Admitted to Kuwait Hospitals in 2016–2017