A qualitative risk assessment of cleansing and disinfection requirements after an avian influenza outbreak in commercial poultry

V. Horigan, P. Gale, A. Adkin, I. Brown, J. Clark, L. Kelly

Research output: Contribution to journalArticle

Abstract

1. During an avian influenza (AI) outbreak in the United Kingdom, the joint aim of the poultry industry and the Government is to eliminate and prevent the spread of infection, through control measures based on the current European Union (EU) Council Directive (2005/94/EC). An essential part of these measures is the cleansing and disinfection (C&D) of infected premises.2. This risk assessment assessed the differences in re-infection in a repopulated flock if the EU Directive is interpreted to permit secondary C&D to be undertaken either with or without dismantling complex equipment. The assessment estimated the probability of virus survival on different types of equipment in a depopulated contaminated poultry house before and after preliminary and secondary C&D procedures. A risk matrix spreadsheet tool was used to carry out the assessment and concluded that, provided secondary C&D is carried out with due diligence (i.e. carried out to a defined code of practice as agreed by both industry and policymakers), the risk of re-infection from equipment is negligible, both with and without dismantling complex equipment in all farm types considered.3. By considering the equipment types individually, the assessment identified those areas of the house which may still contain viable virus post-preliminary C&D and on which attention should be focussed during secondary C&D. The generic risk pathway and matrix spreadsheet tool have the potential to be used for other pathogens and species, given appropriate data.
LanguageEnglish
Pages691-699
Number of pages9
JournalBritish Poultry Science
Volume60
Issue number6
Early online date2 Sep 2019
DOIs
Publication statusPublished - 2 Nov 2019

Fingerprint

qualitative risk assessment
Influenza in Birds
Influenza
Disinfection
avian influenza
Poultry
disinfection
Risk Assessment
Disease Outbreaks
poultry
Equipment and Supplies
Requirements
Infection
Spreadsheet
European Union
Virus
Industry
Union
code of practice
Viruses

Keywords

  • broilers
  • disease
  • influenza virus
  • laying hens

Cite this

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abstract = "1. During an avian influenza (AI) outbreak in the United Kingdom, the joint aim of the poultry industry and the Government is to eliminate and prevent the spread of infection, through control measures based on the current European Union (EU) Council Directive (2005/94/EC). An essential part of these measures is the cleansing and disinfection (C&D) of infected premises.2. This risk assessment assessed the differences in re-infection in a repopulated flock if the EU Directive is interpreted to permit secondary C&D to be undertaken either with or without dismantling complex equipment. The assessment estimated the probability of virus survival on different types of equipment in a depopulated contaminated poultry house before and after preliminary and secondary C&D procedures. A risk matrix spreadsheet tool was used to carry out the assessment and concluded that, provided secondary C&D is carried out with due diligence (i.e. carried out to a defined code of practice as agreed by both industry and policymakers), the risk of re-infection from equipment is negligible, both with and without dismantling complex equipment in all farm types considered.3. By considering the equipment types individually, the assessment identified those areas of the house which may still contain viable virus post-preliminary C&D and on which attention should be focussed during secondary C&D. The generic risk pathway and matrix spreadsheet tool have the potential to be used for other pathogens and species, given appropriate data.",
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A qualitative risk assessment of cleansing and disinfection requirements after an avian influenza outbreak in commercial poultry. / Horigan, V.; Gale, P.; Adkin, A.; Brown, I.; Clark, J.; Kelly, L.

Vol. 60, No. 6, 02.11.2019, p. 691-699.

Research output: Contribution to journalArticle

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