Journal of applied microbiology · 2024
Diversity of Staphylococcus aureus isolated from nares of ruminants.
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Loncaric Igor, Keinprecht Helga, Irimaso Emmanuel, Cabal-Rosel Adriana, Stessl Beatrix, Ntakirutimana Christophe, Marek Lydia, Fischer Otto W, Szostak Michael P, Oberrauch Celine, Wittek Thomas, Müller Elke, Desvars-Larrive Amelie, Feßler Andrea T, Braun Sascha D, Schwarz Stefan, Ehling-Schulz Monika, Monecke Stefan, Ehricht Ralf, Ruppitsch Werner, Grunert Tom, Spergser Joachim
Аннотация
AIMS: To examine the diversity of Staphylococcus aureus isolated from nasal swabs of ruminants in Rwanda.
METHODS AND RESULTS: A total of 454 nasal swabs from 203 cows, 170 goats, and 81 sheep were examined for the presence of S. aureus, and 30 S. aureus isolates were detected and characterized pheno- and genotypically. Resistance to penicillin and/or tetracycline was observed. The isolates were assigned to eight different spa types (t21057 (novel), t10103, t18853, t20842, t318, t355, t458, and t9432) belonging to six clonal complexes (CCs) (CC152, CC30, CC3591, CC3666, CC522, and CC97). Panton-Valentine leukocidin (PVL) genes (lukF-PV/lukS-PV), the bovine leukocidin genes (lukM/lukF-P83), and the human and bovine variants of the toxic shock syndrome toxin gene tst-1 variants were detected.
CONCLUSION: These findings demonstrate that the nares of ruminants in Rwanda are colonized with mastitis-associated S. aureus, including lineages that are also carried by humans, underscoring the zoonotic risk, especially for livestock keepers. These results highlight the crucial importance of hygiene measures when handling livestock.
METHODS AND RESULTS: A total of 454 nasal swabs from 203 cows, 170 goats, and 81 sheep were examined for the presence of S. aureus, and 30 S. aureus isolates were detected and characterized pheno- and genotypically. Resistance to penicillin and/or tetracycline was observed. The isolates were assigned to eight different spa types (t21057 (novel), t10103, t18853, t20842, t318, t355, t458, and t9432) belonging to six clonal complexes (CCs) (CC152, CC30, CC3591, CC3666, CC522, and CC97). Panton-Valentine leukocidin (PVL) genes (lukF-PV/lukS-PV), the bovine leukocidin genes (lukM/lukF-P83), and the human and bovine variants of the toxic shock syndrome toxin gene tst-1 variants were detected.
CONCLUSION: These findings demonstrate that the nares of ruminants in Rwanda are colonized with mastitis-associated S. aureus, including lineages that are also carried by humans, underscoring the zoonotic risk, especially for livestock keepers. These results highlight the crucial importance of hygiene measures when handling livestock.