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Oral and Poster Abstracts

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167 Genotyping of Staphylococcus aureus Isolated from Bovine<br />

Mastitis Cases <strong>and</strong> Asymptomatic Carrier Mammary Gl<strong>and</strong>s<br />

F. Bispo 1 , I. Rivera 1 , J. Arcaro 2 , E. Mamizuka 1 , C. Mendonça 3 ,<br />

P. Melville 1 , E. Costa 1<br />

1 University of Sao Paulo - Institute of Biomedical Sciences,<br />

Microbiology, sao Paulo, Brazil<br />

2 Instituto de Zootecnia, Bovinocultura Leiteira, Nova Odessa, Brazil<br />

3 Universidade Federal Rural de Pernambuco, Departamento de<br />

Medicina Veterinária Preventiva, Recife, Brazil<br />

The mastitis caused by Staphylococcus aureus is one of the main diseases<br />

in dairy herds <strong>and</strong> is responsible for chemical, physical, <strong>and</strong><br />

microbiological alterations in milk, resulting in serious economical losses<br />

<strong>and</strong> public health risk. Chronically infected cows are the main reservoir of<br />

infection in a herd; however, there are other contamination sources <strong>and</strong><br />

reservoirs, such as milking unit liners, <strong>and</strong> human <strong>and</strong> bovine skin.<br />

Additionally, the carrier status is characterized by mammary gl<strong>and</strong>s<br />

without clinical signs of inflammation, negative CMT reaction, <strong>and</strong><br />

SCC

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