| Autor: |
Cobo-Angel CG; Research Group in Milk Quality and Veterinary Epidemiology, Faculty of Agricultural Sciences, Universidad de Caldas, Manizales, Colombia., Jaramillo-Jaramillo AS; Research Group in Milk Quality and Veterinary Epidemiology, Faculty of Agricultural Sciences, Universidad de Caldas, Manizales, Colombia., Palacio-Aguilera M; Faculty of Health Sciences, Universidad de Caldas, Manizales, Colombia., Jurado-Vargas L; Faculty of Health Sciences, Universidad de Caldas, Manizales, Colombia., Calvo-Villegas EA; Faculty of Health Sciences, Universidad de Caldas, Manizales, Colombia., Ospina-Loaiza DA; Research Group in Milk Quality and Veterinary Epidemiology, Faculty of Agricultural Sciences, Universidad de Caldas, Manizales, Colombia., Rodriguez-Lecompte JC; Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada., Sanchez J; Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada., Zadoks R; Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.; Sydney School of Veterinary Science, University of Sydney, Camden, NSW, Australia., Ceballos-Marquez A; Research Group in Milk Quality and Veterinary Epidemiology, Faculty of Agricultural Sciences, Universidad de Caldas, Manizales, Colombia. alejandro.ceballos@ucaldas.edu.co. |
| Abstrakt: |
Group B Streptococcus (GBS), is a leading cause of neonatal death and an emerging pathogen in adults. Additionally, GBS is a bovine pathogen causing intramammary infections. The likelihood of GBS interspecies transmission is largely unknown. We explored the potential transmission of GBS between cattle and people on dairy farms in Colombia and compared the antimicrobial resistance (AMR) profiles of isolates from both host species. Across 33 farms, throat swabs and rectal swabs were collected from 191 people, and rectal swabs and composite milk samples from 2092 cattle, yielding 60 human isolates and 301 bovine isolates. The majority (64%) of isolates belonged to shared sequence types (ST). Sequence type (ST) 1 was the most common strain in both host species, suggesting that interspecies transmission may be possible. Two members of the bovine-specific clonal complex 61/67 were detected in human samples (ST718 and ST1175), providing evidence for the lack of genuine species barriers. Apparent prevalence of penicillin resistance was surprisingly high in human and bovine isolates. Further investigation of this phenomenon is needed and could lead to modification of standard testing and treatment recommendations in human and veterinary medicine. |
