Occurrence and characterisation of methicillin-resistant Staphylococcus aureus isolated from bovine milk in Hungary

Author:

Albert Ervin1,Sipos Rita2,Jánosi Szilárd3,Kovács Péter4,Kenéz Árpád5,Micsinai Adrienn2,Noszály Zsófia1,Biksi Imre1

Affiliation:

1. 1Department of Pathology, University of Veterinary Medicine Budapest, Üllő, Dóra major, H-2225, Hungary

2. 2BIOMI Ltd., Gödöllő, Hungary

3. 3National Food Chain Safety Office, Veterinary Diagnostic Directorate, Budapest, Hungary

4. 4Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine Budapest, Budapest, Hungary

5. 5Livestock Performance Testing Ltd., Gödöllő, Hungary

Abstract

AbstractThe last surveys on methicillin-resistant Staphylococcus aureus (MRSA) isolated from bovine milk in Hungary took place in the 2000s. To elucidate the genetic variability and to estimate the burden of the pathogen, MRSA from our strain collection and prospectively collected Staphylococcus aureus (SA) isolates originating from two milk hygiene laboratories were investigated. Between 2003 and 2018, 27 MRSA strains originating from 10 dairy farms were deposited and characterised. Most strains (n = 20) belonged to ST1-t127-SCCmecIV and were recovered from three unrelated farms. From other farms, variable genotypes were identified sporadically: ST22-t032-SCCmecIV from three farms; a newly described double locus variant of ST97, ST5982-t458-SCCmecIV from two farms; and ST398-t011-SCCmecIV and ST398-t011-SCCmecV from two respective farms. The prospective screening of 626 individual SA isolates originating from 42 dairy farms resulted in four (0.48 %) MRSA strains from three (7.14 %) farms. All MRSA isolates belonged to the clonal complex 398 and a novel spa-type t19251 was also identified. Most isolates were resistant to three or more antimicrobial classes. The occurrence and significance of MRSA of dairy origin seems to be unchanged in the past decade in Hungary. However, the low host specificity and multiresistance of the identified genotypes calls for periodic revision on the role and distribution of the pathogen in the Hungarian dairy sector.

Funder

European Union

European Social Fund

Publisher

Akademiai Kiado Zrt.

Subject

General Veterinary

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