A longitudinal study on transmission of Staphylococcus aureus genotype B in Swiss communal dairy herds

van den Borne, Bart; Graber, Hans Ulrich; Völk, Verena; Sartori, Carlotta; Steiner, Adrian; Haerdi-Landerer, M Christina; Bodmer, Michèle (2017). A longitudinal study on transmission of Staphylococcus aureus genotype B in Swiss communal dairy herds. Preventive veterinary medicine, 136, pp. 65-68. Elsevier 10.1016/j.prevetmed.2016.11.008

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Staphylococcus aureus is a common mastitis causing pathogen of dairy cattle. Several S. aureus genotypes exist, of which genotype B (GTB) is highly prevalent in Swiss dairy herds. Dairy farming in mountainous regions of Switzerland is characterised by the movement of dairy cattle to communal pasture-based operations at higher altitudes. Cows from different herds of origin share pastures and milking equipment for a period of 2 to 3 months during summer. The aim of this longitudinal observational study was to quantify transmission of S. aureus GTB in communal dairy operations. Cows (n=551) belonging to 7 communal operations were sampled at the beginning and end of the communal period. Transmission parameter β was estimated using a Susceptible-Infectious-Susceptible (SIS) model. The basic reproduction ratio R0 was subsequently derived using previously published information about the duration of infection. Mean transmission parameter β was estimated to be 0.0232 (95% CI: 0.0197-0.0274). R0 was 2.6 (95% CI: 2.2-3.0), indicating that S. aureus GTB is capable of causing major outbreaks in Swiss communal dairy operations. This study emphasized the contagious behaviour of S. aureus GTB. Mastitis management in communal dairy operations should be optimized to reduce S. aureus GTB transmission between cows and back to their herds of origin.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > Veterinary Public Health / Herd Health Management
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Clinic for Ruminants
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Public Health Institute
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)

UniBE Contributor:

van den Borne, Bart; Graber, Hans Ulrich; Völk, Verena; Sartori, Carlotta; Steiner, Adrian and Bodmer, Michèle

Subjects:

600 Technology > 610 Medicine & health
600 Technology > 630 Agriculture

ISSN:

0167-5877

Publisher:

Elsevier

Language:

English

Submitter:

Daniela Fasel

Date Deposited:

16 Feb 2017 09:58

Last Modified:

12 Nov 2018 07:44

Publisher DOI:

10.1016/j.prevetmed.2016.11.008

PubMed ID:

27890338

Uncontrolled Keywords:

Dairy cattle; Intramammary infection; Mastitis; Reproduction ratio; Staphylococcus aureus; Transmission parameter

BORIS DOI:

10.7892/boris.92199

URI:

https://boris.unibe.ch/id/eprint/92199

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