Staphylococcus aureus is an ubiquitous and important pathogen causing diseases in humans and animals. It is a major and contagious pathogen in dairies. Methicillin-resistant S. aureus (MRSA)strains arec haracterized by the mecA gene coding for a modified penicillin-binding protein (PBP). The derived reduced susceptibility to antibiotics is a major concern in medicine and is gradually becoming important for livestock animals too. Pigs and poultry are well-known MRSA reservoir. Animals caretakers working in those farms are at high and demonstrated risk to be contaminated (3). Dairy cows can be positive too, mastitis can be caused by MRSA at the same extent of MSSA and prevalence can be at an unexpected level (5). Relatedness with swine farms could represent a source of infection for cows through environmental contamination or human carriage of caretakers and milkers. In this study we describe the contamination of milk with MRSA strains in a dairy herd which is located within few meters from a farrow-to-finish pig holding, under the same property. Genetic comparison between strains isolated from pigs, cows, personnel and environment has been performed through the amplification of the 16S-23S rRNA intergenic spacer (RS-PCR) a technique suitable to (i) classify strains with high virulence and diffusivity (2) and to (ii) trace the possible path of infection.

Spread of MRSA strains within a dairy farm strictly related to a pig holding / C. Locatelli, P. Cremonesi, A. Casula, C. Pollera, L.M. Scaccabarozzi, V. Bronzo, B. Castiglioni, P. Moroni - In: Annual meeting : national mastitis council[s.l] : National Mastitis Council, 2012 Jan. - pp. 207-208 (( Intervento presentato al 51. convegno National Mastitis Council Annual Meeting tenutosi a St. Pete Beach nel 2012.

Spread of MRSA strains within a dairy farm strictly related to a pig holding

C. Locatelli
Primo
;
A. Casula;C. Pollera;L.M. Scaccabarozzi;V. Bronzo;P. Moroni
Ultimo
2012

Abstract

Staphylococcus aureus is an ubiquitous and important pathogen causing diseases in humans and animals. It is a major and contagious pathogen in dairies. Methicillin-resistant S. aureus (MRSA)strains arec haracterized by the mecA gene coding for a modified penicillin-binding protein (PBP). The derived reduced susceptibility to antibiotics is a major concern in medicine and is gradually becoming important for livestock animals too. Pigs and poultry are well-known MRSA reservoir. Animals caretakers working in those farms are at high and demonstrated risk to be contaminated (3). Dairy cows can be positive too, mastitis can be caused by MRSA at the same extent of MSSA and prevalence can be at an unexpected level (5). Relatedness with swine farms could represent a source of infection for cows through environmental contamination or human carriage of caretakers and milkers. In this study we describe the contamination of milk with MRSA strains in a dairy herd which is located within few meters from a farrow-to-finish pig holding, under the same property. Genetic comparison between strains isolated from pigs, cows, personnel and environment has been performed through the amplification of the 16S-23S rRNA intergenic spacer (RS-PCR) a technique suitable to (i) classify strains with high virulence and diffusivity (2) and to (ii) trace the possible path of infection.
staph aureus; MRSA
Settore VET/05 - Malattie Infettive degli Animali Domestici
gen-2012
Book Part (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/170293
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact