Salmonella control in poultry flocks and its public health impact

EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel)

Research output: Contribution to journalJournal articleResearchpeer-review

17 Downloads (Pure)

Abstract

An increase in confirmed human salmonellosis cases in the EU after 2014 triggered investigation of contributory factors and control options in poultry production. Reconsideration of the five current target serovars for breeding hens showed that there is justification for retaining Salmonella Enteritidis, Salmonella Typhimurium (including monophasic variants) and Salmonella Infantis, while Salmonella Virchow and Salmonella Hadar could be replaced by Salmonella Kentucky and either Salmonella Heidelberg, Salmonella Thompson or a variable serovar in national prevalence targets. However, a target that incorporates all serovars is expected to be more effective as the most relevant serovars in breeding flocks vary between Member State (MS) and over time. Achievement of a 1% target for the current target serovars in laying hen flocks is estimated to be reduced by 254,400 CrI95[98,540; 602,700] compared to the situation in 2016. This translates to a reduction of 53.4% CrI95[39.1; 65.7] considering the layer-associated human salmonellosis true cases and 6.2% considering the overall human salmonellosis true cases in the 23 MSs included in attribution modelling. A review of risk factors for Salmonella in laying hens revealed that overall evidence points to a lower occurrence in non-cage compared to cage systems. A conclusion on the effect of outdoor access or impact of the shift from conventional to enriched cages could not be reached. A similar review for broiler chickens concluded that the evidence that outdoor access affects the occurrence of Salmonella is inconclusive. There is conclusive evidence that an increased stocking density, larger farms and stress result in increased occurrence, persistence and spread of Salmonella in laying hen flocks. Based on scientific evidence, an impact of Salmonella control programmes, apart from general hygiene procedures, on the prevalence of Campylobacter in broiler flocks at the holding and on broiler meat at the end of the slaughter process is not expected.

Original languageEnglish
Article number5596
JournalEFSA Journal
Volume17
Issue number2
Number of pages155
ISSN1831-4732
DOIs
Publication statusPublished - 2019

Cite this

EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel) (2019). Salmonella control in poultry flocks and its public health impact. EFSA Journal, 17(2), [5596]. https://doi.org/10.2903/j.efsa.2019.5596
EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel). / Salmonella control in poultry flocks and its public health impact. In: EFSA Journal. 2019 ; Vol. 17, No. 2.
@article{d8eba3231aff4d36836ecc06f6414c10,
title = "Salmonella control in poultry flocks and its public health impact",
abstract = "An increase in confirmed human salmonellosis cases in the EU after 2014 triggered investigation of contributory factors and control options in poultry production. Reconsideration of the five current target serovars for breeding hens showed that there is justification for retaining Salmonella Enteritidis, Salmonella Typhimurium (including monophasic variants) and Salmonella Infantis, while Salmonella Virchow and Salmonella Hadar could be replaced by Salmonella Kentucky and either Salmonella Heidelberg, Salmonella Thompson or a variable serovar in national prevalence targets. However, a target that incorporates all serovars is expected to be more effective as the most relevant serovars in breeding flocks vary between Member State (MS) and over time. Achievement of a 1{\%} target for the current target serovars in laying hen flocks is estimated to be reduced by 254,400 CrI95[98,540; 602,700] compared to the situation in 2016. This translates to a reduction of 53.4{\%} CrI95[39.1; 65.7] considering the layer-associated human salmonellosis true cases and 6.2{\%} considering the overall human salmonellosis true cases in the 23 MSs included in attribution modelling. A review of risk factors for Salmonella in laying hens revealed that overall evidence points to a lower occurrence in non-cage compared to cage systems. A conclusion on the effect of outdoor access or impact of the shift from conventional to enriched cages could not be reached. A similar review for broiler chickens concluded that the evidence that outdoor access affects the occurrence of Salmonella is inconclusive. There is conclusive evidence that an increased stocking density, larger farms and stress result in increased occurrence, persistence and spread of Salmonella in laying hen flocks. Based on scientific evidence, an impact of Salmonella control programmes, apart from general hygiene procedures, on the prevalence of Campylobacter in broiler flocks at the holding and on broiler meat at the end of the slaughter process is not expected.",
author = "{EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel)} and Kostas Koutsoumanis and Ana Allende and Avelino Alvarez-Ord{\'o}{\~n}ez and Declan Bolton and Sara Bover-Cid and Marianne Chemaly and Cesare, {Alessandra De} and Lieve Herman and Friederike Hilbert and Roland Lindqvist and Maarten Nauta and Luisa Peixe and Giuseppe Ru and Marion Simmons and Panagiotis Skandamis and Elisabetta Suffredini and Jeroen Dewulf and Tine Hald and Virginie Michel and Taina Niskanen and Antonia Ricci and Emma Snary and Frank Boelaert and Winy Messens and Robert Davies",
year = "2019",
doi = "10.2903/j.efsa.2019.5596",
language = "English",
volume = "17",
journal = "E F S A Journal",
issn = "1831-4732",
publisher = "European Food Safety Authority (E F S A)",
number = "2",

}

EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel) 2019, 'Salmonella control in poultry flocks and its public health impact', EFSA Journal, vol. 17, no. 2, 5596. https://doi.org/10.2903/j.efsa.2019.5596

Salmonella control in poultry flocks and its public health impact. / EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel).

In: EFSA Journal, Vol. 17, No. 2, 5596, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Salmonella control in poultry flocks and its public health impact

AU - EFSA Panel on Biological Hazards (EFSA BIOHAZ Panel)

AU - Koutsoumanis, Kostas

AU - Allende, Ana

AU - Alvarez-Ordóñez, Avelino

AU - Bolton, Declan

AU - Bover-Cid, Sara

AU - Chemaly, Marianne

AU - Cesare, Alessandra De

AU - Herman, Lieve

AU - Hilbert, Friederike

AU - Lindqvist, Roland

AU - Nauta, Maarten

AU - Peixe, Luisa

AU - Ru, Giuseppe

AU - Simmons, Marion

AU - Skandamis, Panagiotis

AU - Suffredini, Elisabetta

AU - Dewulf, Jeroen

AU - Hald, Tine

AU - Michel, Virginie

AU - Niskanen, Taina

AU - Ricci, Antonia

AU - Snary, Emma

AU - Boelaert, Frank

AU - Messens, Winy

AU - Davies, Robert

PY - 2019

Y1 - 2019

N2 - An increase in confirmed human salmonellosis cases in the EU after 2014 triggered investigation of contributory factors and control options in poultry production. Reconsideration of the five current target serovars for breeding hens showed that there is justification for retaining Salmonella Enteritidis, Salmonella Typhimurium (including monophasic variants) and Salmonella Infantis, while Salmonella Virchow and Salmonella Hadar could be replaced by Salmonella Kentucky and either Salmonella Heidelberg, Salmonella Thompson or a variable serovar in national prevalence targets. However, a target that incorporates all serovars is expected to be more effective as the most relevant serovars in breeding flocks vary between Member State (MS) and over time. Achievement of a 1% target for the current target serovars in laying hen flocks is estimated to be reduced by 254,400 CrI95[98,540; 602,700] compared to the situation in 2016. This translates to a reduction of 53.4% CrI95[39.1; 65.7] considering the layer-associated human salmonellosis true cases and 6.2% considering the overall human salmonellosis true cases in the 23 MSs included in attribution modelling. A review of risk factors for Salmonella in laying hens revealed that overall evidence points to a lower occurrence in non-cage compared to cage systems. A conclusion on the effect of outdoor access or impact of the shift from conventional to enriched cages could not be reached. A similar review for broiler chickens concluded that the evidence that outdoor access affects the occurrence of Salmonella is inconclusive. There is conclusive evidence that an increased stocking density, larger farms and stress result in increased occurrence, persistence and spread of Salmonella in laying hen flocks. Based on scientific evidence, an impact of Salmonella control programmes, apart from general hygiene procedures, on the prevalence of Campylobacter in broiler flocks at the holding and on broiler meat at the end of the slaughter process is not expected.

AB - An increase in confirmed human salmonellosis cases in the EU after 2014 triggered investigation of contributory factors and control options in poultry production. Reconsideration of the five current target serovars for breeding hens showed that there is justification for retaining Salmonella Enteritidis, Salmonella Typhimurium (including monophasic variants) and Salmonella Infantis, while Salmonella Virchow and Salmonella Hadar could be replaced by Salmonella Kentucky and either Salmonella Heidelberg, Salmonella Thompson or a variable serovar in national prevalence targets. However, a target that incorporates all serovars is expected to be more effective as the most relevant serovars in breeding flocks vary between Member State (MS) and over time. Achievement of a 1% target for the current target serovars in laying hen flocks is estimated to be reduced by 254,400 CrI95[98,540; 602,700] compared to the situation in 2016. This translates to a reduction of 53.4% CrI95[39.1; 65.7] considering the layer-associated human salmonellosis true cases and 6.2% considering the overall human salmonellosis true cases in the 23 MSs included in attribution modelling. A review of risk factors for Salmonella in laying hens revealed that overall evidence points to a lower occurrence in non-cage compared to cage systems. A conclusion on the effect of outdoor access or impact of the shift from conventional to enriched cages could not be reached. A similar review for broiler chickens concluded that the evidence that outdoor access affects the occurrence of Salmonella is inconclusive. There is conclusive evidence that an increased stocking density, larger farms and stress result in increased occurrence, persistence and spread of Salmonella in laying hen flocks. Based on scientific evidence, an impact of Salmonella control programmes, apart from general hygiene procedures, on the prevalence of Campylobacter in broiler flocks at the holding and on broiler meat at the end of the slaughter process is not expected.

U2 - 10.2903/j.efsa.2019.5596

DO - 10.2903/j.efsa.2019.5596

M3 - Journal article

AN - SCOPUS:85065627326

VL - 17

JO - E F S A Journal

JF - E F S A Journal

SN - 1831-4732

IS - 2

M1 - 5596

ER -