Towards a standardised surveillance for Trichinella in the European Union

Autor: M. Howell, Karsten Nöckler, Muza Kirjušina, IA Zimmer, Mike Taylor, Edoardo Pozio, Pierre Dorny, K.R. Hunt, Marleen Claes, Jaap Boes, Franck Boué, Graham Smith, Pascal Boireau, P. Rossi, L. C. Snow, J. van der Giessen, Lis Alban, Georgios Theodoropoulos, Heidi L. Enemark, MM Viera-Pinto, Ajc Cook, Isabelle Vallée
Rok vydání: 2011
Předmět:
Male
Veterinary medicine
Swine
Epidemiology
Cost-Benefit Analysis
Trichinella
Testing
Wildlife
Meat hygiene
Risk groups
Control programs
law.invention
Food Animals
Hygiene
law
Zoonoses
Economic cost
Animal Husbandry
Sampling
media_common
Swine Diseases
Surveillance
Cost–benefit analysis
biology
Helminthic diseases
Trichinellosis
Animal husbandry
Animal diseases
Transmission (mechanics)
Female
Pigs
Public Health
medicine.medical_specialty
Livestock
Monitoring
media_common.quotation_subject
Environmental health
medicine
Animals
media_common.cataloged_instance
European Union
European union
Probability
business.industry
Methodology
biology.organism_classification
Review of the literature
Housing
Cost-effectiveness
Mathematical modeling
Risk score
Animal Science and Zoology
business
Sentinel Surveillance
Zdroj: Preventive Veterinary Medicine. 99:148-160
ISSN: 0167-5877
DOI: 10.1016/j.prevetmed.2011.02.008
Popis: Each year, more than 167 million pigs in the European Union (EU) are tested for Trichinella spp. under the current meat hygiene regulations. This imposes large economic costs on countries, yet the vast majority of these pigs test negative and the public health risk in many countries is therefore considered very low. This work reviewed the current Trichinella status across the EU as well as the national level of monitoring and reporting. It also reviewed which animal species were affected by Trichinella and in which species it should be surveyed. This information was used to design a cost-effective surveillance programme that enables a standardised monitoring approach within the EU. The proposed surveillance programme relies on identifying sub-populations of animals with a distinct risk. Low-risk pigs are finisher pigs that originate from so-called controlled housing. All other pigs are considered high-risk pigs. Controlled housing is identified by the application of a specific list of management and husbandry practices. We suggest that member states (MS) be categorised into three classes based on the confidence that Trichinella can be considered absent, in the specified sub-population of pigs above a specified design prevalence which we set to 1 per million pigs. A simple and transparent method is proposed to estimate this confidence, based on the sensitivity of the surveillance system, taking into account the sensitivity of testing and the design prevalence. The probability of detecting a positive case, if present, must be high (>95 or >99%) to ensure that there is a low or negligible risk of transmission to humans through the food chain. In MS where the probability of a positive pig is demonstrated to be negligible, testing of fattening pigs from a sub-population consisting of pigs from controlled housing can be considered unnecessary. Furthermore, reduced testing of finishers from the sub-population consisting of pigs from non-controlled housing might even be considered, if conducted in conjunction with a proportionate sampling scheme and a risk-based wildlife surveillance programme where applicable. The proposed surveillance programme specifies the required number of samples to be taken and found negative, in a MS. A MS with no data or positive findings will initially be allocated to class 1, in which all pigs should be tested. When a MS is able to demonstrate a 95% or 99% confidence that Trichinella is absent, the MS will be allocated to class 2 or 3, in which the testing requirement is lower than in class 1.
Databáze: OpenAIRE
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