ISSN 2285-1364, ISSN CD-ROM 2285-5521, ISSN ONLINE 2285-1372, ISSN-L 2285-1364

Prevalent Salmonella serotypes in some Romanian poultry farms

Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XVI
Written by Elena ROTARU, Stelian BARAITAREANU, Sorin PARVU, Doina DANES

The European Centre for Disease Prevention and Control and the European Food Safety Authority devote considerable resources to develop tools and recommendations to improve epidemiological investigation of food-borne outbreaks. One of the most important food-borne agents monitored are Salmonella spp. and in order to reduce risk to public health, several policy actions were designed to control salmonella infections. Present study aimed to investigate the prevalence of Salmonella serotypes in seven poultry holdings located in Giurgiu County, Romania. More than three thousand biological samples have been submitted to bacteriological exam. Briefly, samples were pre-enriched in buffered peptone water followed by enrichment in Modified Rappaport-Vassiliadis, Enrichment broth and Selenite Cystine Broth. Resulting cultures have been plated onto XLD, Istrate Meitert and Wilson-Blair agar plates, incubated at 37°C for 24h. Presumptive Salmonella isolates have been biochemically and serologically confirmed. Between 2008 and 2010 were identified and characterized Salmonella serotypes (525 isolates) as follow: S. Virchow (182 strains), S. Enteritidis (10 strains), S. Tallahassee (3 strains), S. Infantis (273 strains), S. Tennessee (9 strains), S. Mbandaka (8 strains), S. Newport (9 strains), S. Amsterdam (2 strains), S. Salamae (1 strain), S. Kottbus (2 strains), S. Glostrup (1 strain), S. Livingstone (2 strains), S. Isangi (1 strain), S. Hadar (19 strains), and S. Thompson (3 strains). The highest prevalence in 2008 registered S. Virchow (182/199) and in 2009-2010 S. Infantis (140/164 and 124/162 respectively). These results show the heterogeneity of Salmonella strains circulating in poultry farms and the competition of serotypes in different years. Also, the high number of isolates with zoonotic potential (264 strains S. Infantis, 10 strains S. Enteritidis) requires increased attention in food security.

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