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Staphylococcus aureus(S. aureus) is a pathobiont of humans as well as a multitude of animalspecies. The high prevalence of multi-resistant and more virulent strains ofS. aureusnecessitatesthe development of new prevention and treatment strategies forS. aureusinfection. Major advancestowards understanding the pathogenesis ofS. aureusdiseases have been made using conventionalmouse models, i.e., by infecting naïve laboratory mice with human-adaptedS. aureusstrains. However,the failure to transfer certain results obtained in these murine systems to humans highlights thelimitations of such models. Indeed, numerousS. aureusvaccine candidates showed promising resultsin conventional mouse models but failed to offer protection in human clinical trials. These limitationsarise not only from the widely discussed physiological differences between mice and humans, but alsofrom the lack of attention that is paid to the specific interactions ofS. aureuswith its respectivehost. For instance, animal-derivedS. aureuslineages show a high degree of host tropism and carry arepertoire of host-specific virulence and immune evasion factors. Mouse-adaptedS. aureusstrains,humanized mice, and microbiome-optimized mice are promising approaches to overcome theselimitations and could improve transferability of animal experiments to human trials in the future.