Analysis of the baseline survey on the prevalence of Salmonella in holdings with breeding pigs in the EU, 2008 - Part A: Salmonella prevalence estimates


European Food Safety Authority
EFSA Journal
EFSA Journal 2009; 7(12):1377 [93 pp.].

EFSA wishes to thank the members of the Task Force on Zoonoses Data Collection that endorsed this report: Andrea Ammon, Lisa Barco, Marta Bedriova, Susan Chircop, Georgi Chobanov, Ingrid Dan, Jürg Danuser, Noel Demicoli, Kris De Smet, Sylvie Francart, Matthias Hartung, Birgitte Helwigh, Merete Hofshagen, Patrícia Inácio, Sarolta Idei, Elina Lahti, Lesley Larkin, Peter Much, Edith Nagy, Lisa O’Connor, Rob Van Oosterom, Jacek Osek, Manca Pavšič, Antonio Petrini, Melanie Picherot, Christodoulos Pipis, Saara Raulo, Hanne Rosenquist, Jose Luis Saez Llorente, Petr Šatrán, Snieguole Sceponaviciene, Joseph Schon, Jelena Sõgel, Ana María Troncoso González, Kilian Unger, Luc Vanholme, Dimitris Vourvidis, Nicole Werner-Keišs. The contribution of the members of the working group that prepared this scientific report is gratefully acknowledged: Vojislava Bole-Hribovšek, Mariann Chriél, Rob Davies, June Fanning, Arjen W. van de Giessen, Laura Pérez Palancar, Antonia Ricci, Nicolas Rose, Lucy Snow; and that of EFSA’s contractors: Hendriek Boshuizen from National Institute for Public Health and Environment (RIVM); Tine Hald from Danish Technical University, National Food Institute, as well as EFSA’s staff members: Giusi Amore, Francesca Riolo and Frank Boelaert for the support provided to this EFSA scientific output.

Scientific Report of EFSA
On request from
European Commission,
Question Number
Published in the EFSA Journal
17 December 2009
European Food Safety Authority (EFSA), Parma, Italy

Salmonella is a major cause of food-borne illness in humans. Farm animals and foods of animal origin are important sources of human Salmonella infections. This European Union-wide Salmonella baseline survey was conducted in 2008 in holdings with breeding pigs. A total of 1,609 holdings housing and selling mainly breeding pigs (breeding holdings) and 3,508 holdings housing breeding pigs and selling mainly pigs for fattening or slaughter (production holdings) from 24 European Union Member States and two non-Member States, were randomly selected and included in the survey. In each selected breeding and production holding, fresh voidedpooled faecal samples were collected from 10 randomly chosen pens, yards or groups of breeding pigs over six months of age, representing the different stages of the breeding herd. The pooled faecal samples from each holding were tested for Salmonella and the isolates were serotyped. The overall European Union prevalence ofSalmonella-positive holdings with breeding pigs was 31.8% and all but one of the 24 participating Member States detected Salmonella in at least one holding. The European Union prevalence of Salmonella-positive breeding holdings was 28.7%, and prevalence varied from 0% to 64.0% among Member States. The European Union prevalence of Salmonella-positive production holdings was 33.3%, while the Member States’ prevalence varied from 0% to 55.7%. The number of different Salmonella serovars isolated in breeding holdings and production holdings in the European Union was 54 and 88, respectively. Salmonella Derby and Salmonella Typhimurium predominated in both types of holdings. Breeding pigs may be an important source of dissemination of Salmonella throughout the pig-production chain. The results of this survey provide valuable information for setting a Salmonella reduction target for breeding pigs and for assessing the impact of Salmonella transmission originating from holdings with breeding pigs

Salmonella, pigs, breeding pigs, survey, prevalence, EU.
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