This article belongs to the Special Issue Exploring the Epidemiology, Pathogenicity, and Therapeutic Options of Staphylococcus spp.Several studies have showed that a dog-to-human transmission of Staphylococcus aureus occurs. Hunting dogs do not have as much contact with their owners as dogs that live in the same household as the owners; however, these dogs have contact with their owners during hunting activities as well as when hunting game; therefore, we aimed to isolate S. aureus from hunters and their hunting dogs to investigate a possible S. aureus transmission. Nose and mouth samples were collected from 30 hunters and their 78 hunting dogs for staphylococcal isolation. The species identification was performed using MALDI-TOF. The antimicrobial susceptibility profiles were accessed using the Kirby-Bauer method and respective antimicrobial resistance genes were investigated by PCR. Multilocus sequence typing (MLST) and spa- and agr-typing was performed in all S. aureus isolates. S. aureus were detected in 10 (30%) human samples and in 11 (15.4%) dog samples of which 11 and 5 were methicillin-resistant S. aureus (MRSA). Other staphylococci were identified, particularly, S. pseudintermedius. Most S. aureus isolates were resistant to penicillin, erythromycin, and tetracycline. Evidence of a possible transmission of S. aureus between human and dogs was detected in three hunters and their dogs. S. aureus isolates were ascribed to 10 STs and 9 spa-types. A moderate colonization of S. aureus in hunting dogs and their owners was detected in this study. A few dog-to-dog and dog-to-human possible transmissions were identified.This work was funded by the R&D Project CAREBIO2: Comparative assessment of
antimicrobial resistance in environmental biofilms through proteomics—towards innovative thera-
nostic biomarkers, with reference NORTE-01-0145-FEDER-030101 and PTDC/SAU-INF/30101/2017,
financed by the European Regional Development Fund (ERDF) through the Northern Regional
Operational Program (NORTE 2020) and the Foundation for Science and Technology (FCT). This
work was supported by the Associate Laboratory for Green Chemistry-LAQV, which is financed by
national funds from FCT/MCTES (UIDB/50006/2020 and UIDP/50006/2020) and by the projects
UIDB/CVT/00772/2020 and LA/P/0059/2020 funded by the Portuguese Foundation for Science
and Technology (FCT). Vanessa Silva is grateful to FCT (Fundacão para a Ciência e a Tecnologia) for
financial support through the PhD grant SFRH/BD/137947/2018.info:eu-repo/semantics/publishedVersio
