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Australia: Highly Pathogenic Avian influenza (H7N7) Maitland- control and eradication

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This policy outlines how Highly Pathogenic Avian influenza (HPAI) H7N7 will be eradicated in the 2012 outbreak at Maitland (Australia). The policy aims to achieve eradication in the shortest possible time, while limiting the risk of human infection and minimising negative impacts on industry and the community.

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Australia: Highly Pathogenic Avian influenza (H7N7) Maitland- control and eradication

  1. 1. Ref: INT12/94582Highly Pathogenic Avian influenza (H7N7) Maitland-control and eradicationNUMBER TI-O-139 VERSION 1AUTHORISED BY CHIEF VETERINARY OFFICER OF NSW AUTHORISED DATE 22/11/2012ISSUED BY Primary Industries, Biosecurity NSW EFFECTIVE DATE 22/11/2012PurposeThis policy outlines how Highly Pathogenic Avian influenza (HPAI) H7N7 will be eradicated in the 2012outbreak at Maitland. The policy aims to achieve eradication in the shortest possible time, while limitingthe risk of human infection and minimising negative impacts on industry and the community.BackgroundAvian influenza is an emergency animal disease under the Animal Diseases and Animal Pest(Emergency Outbreaks) Act 1991 (‘the Act’) and is notifiable under the Stock Diseases Act 1923 andADAPEO. The legal authority to deal with Avian influenza is primarily vested in the Act and subordinatelegislationHighly Pathogenic Avian influenza H7 is a Category 2 Emergency Animal Disease (EAD) under theGovernment and Livestock Industry Cost Sharing Deed In Respect of Emergency Animal DiseaseResponses (EAD Response Agreement). Category 2 EADs are those for which costs will be shared80% by government and 20% by industry.This response policy reflects the early detection of the outbreak; the limited extent of the outbreak andthe relatively isolated location of affected places. Virus virulence factors and the likelihood that wildbirds are involved have also been taken into consideration.AUSVETPLAN recommends that due to the effectiveness of stamping out and the risk to human health,the default policy for an outbreak is to control and eradicate the disease through stamping out to re-establish the HPAI-free status of Australia as quickly as possible. AUSVETPLAN further states thatstamping out needs to be accompanied by appropriate quarantine and control measures,decontamination of infectious material on Infected Places, targeted tracing and surveillance, andenhanced biosecurity by all levels of the poultry production and processing industries, and by zoos andcage bird owners.ScopeThis policy applies in relation to suspected or confirmed cases of infection with avian influenza inanimals that are not known to be endemically affected (ie not wild birds).This policy applies to:1. all staff of the NSW Department of Trade and Investment (‘the Department’) including staff ofthe NSW Department of Primary Industries (DPI);2. all staff of Livestock Health and Pest Authorities (LHPA) (when signed as a Written Instrument);and3. any contractors, subcontractors or other persons involved in avian influenza response activitieswho are engaged by or acting under the direction of the Department or a LHPA.POLICY TI-O-139 PAGE 1 OF 5HIGHLY PATHOGENIC AVIAN INFLUENZA (H7N7) MATILAND – CONTROL AND ERADICATIONVERSION 1
  2. 2. WarningHPAI can cause disease in humans. A person infected with AI may have no symptoms, mild upperrespiratory symptoms, or symptoms typical of influenza (fever, cough, fatigue, myalgia, sore throat,shortness of breath, runny nose, headache). The most common presentation of humans infected withH7 strains is conjunctivitis.Policy1. NSW Health will be notified as soon as possible following confirmation of AI and they will beprovided with the contact details of any people who have been exposed to infected birds.2. The Food Authority will be notified as soon as possible following confirmation of AI and providedwith the identity of the infected premises.3. Staff engaged in avian influenza response activities must comply with their respectiveorganisation’s WHS policy.4. Without limitation to the WHS obligations of all such persons engaged in avian influenza responseactivities, this policy must be utilised at any place so that any diagnosed or suspected case of avianinfluenza in an animal is effectively contained in a manner that enables the department, the LHPAsand their employees to carry out effective avian influenza response activities whilst meeting theirrespective obligations for WHS. In particular, the site supervisor and/or the local coordinator mustensure that:all departmental and LHPA staff under their direction or control who are engaged to undertakeavian influenza response activitiesany contractors engaged by or acting under the direction of the department or the LHPAs,any persons lawfully permitted by an Inspector to move into or out of, or move within an InfectedPlace (IP) (including any owner or occupier and any employee or contractor of the owner oroccupier) andany persons to whom the department or the LHPAs supply substances and equipment inconnection with avian influenza activities (such as PPE )are made aware of and understand the need to comply with this policy so as to ensure their safetyand the safety of others.5. Staff may elect not to undertake field work with animals known or suspected to be infected withavian influenza.6. Personnel who have contact with infected or suspected infected poultry, poultry products, placesand other things during avian influenza response activities must wear appropriate PersonalProtective Equipment (PPE) and need to be vaccinated with the current (human) influenza vaccineto reduce the risk of re-assortment of avian and human influenza virus strains that could result in anew human pandemic influenza strain.7. The response will comply with AUSVETPLAN Disease Strategy Avian influenza Version 3.4.2011,apart from variations as agreed by the Consultative Committee on Emergency Animal Diseases(CCEAD).8. Stamping out will be undertaken on all Infected Places (IP) using methods described in theDestruction of Animals Manual unless a risk assessment determines there is a low risk of infectionfrom particular birds. If rare poultry, cage or zoo birds are infected, then modified stamping out orisolation strategies may be used if approved by CCEAD.9. Pre-emptive slaughter may occur on other places depending on information derived from tracing,surveillance and study of the behaviour of the disease.10. The IP will be quarantined and an Infected Place Order issued.11. A Restricted Area (RA) Order will declare a RA. The RA Order will identify the animals, animalproducts, fodder, fittings, soil and other things that are affected by the declaration. Movementcontrols will then be implemented in relation to those things. An Area Restriction Order will requirethat persons who own or are in control of birds must make the birds available to NSW DPI fortesting. It will also require persons who have been in contact with certain birds and bird products inthe RA to disinfect prior to moving within or out of the RA.12. A Control Area (CA) Order will declare a CA around the RA. The size of the CA will be determinedby a risk assessment. Some movement restrictions and enhanced biosecurity measures will bePOLICY TI-O-139 PAGE 2 OF 5HIGHLY PATHOGENIC AVIAN INFLUENZA (H7N7) MATILAND – CONTROL AND ERADICATIONVERSION 1
  3. 3. 13. Tracing and surveillance will be undertaken to determine the source and extent of infection and toestablish Proof of Freedom (POF) from disease.14. Sanitary disposal of contaminated material such as dead birds, eggs, litter, manure, fresh or frozencarcasses, fodder and fittings that cannot be effectively treated will follow the AUSVETPLANDisposal Manual guidelines.15. Disinfection of the infected site will follow the guidelines in the AUSVETPLAN DecontaminationManual.16. Vaccination may be considered if an outbreak of HPAI is likely to spread widely or appears likely tobecome endemic.17. The risk of spread of infection on the IP from wild birds, rats, mice and flying insects should beassessed and treated where appropriate.18. Repopulation cannot take place until the outbreak has been brought under control in the area andat least 21 days has passed since:a. the destruction of the last poultry bird on the IP, andb. the completion of satisfactory cleaning and disinfection on the IP.ProceduresOH&S for field operations associated with zoonotic AI and like diseases including Hendra virusReporting injuries and fatalitiesUse of PPEAUSVETPLAN Destruction of Animals ManualAUSVETPLAN Disposal ManualAUSVETPLAN Decontamination ManualProc 2012-15: Avian influenza – Maitland – November 2012- Movement ControlsProc 2012-xx Avian influenza – Maitland – November 2012 – Surveillance proceduresRoles and responsibilitiesChief Veterinary Officer:1. The Chief Veterinary Officer (CVO) is responsible for developing an Emergency Animal DiseaseResponse Plan (EADRP) for the particular outbreak.2. Overall operational management of the incident rests with the CVO, with oversight by theConsultative Committee on Emergency Animal Diseases (CCEAD).3. CVO will implement disease control measures as agreed in the EADRP and in accordance withrelevant legislation.DelegationsDelegations made under the Animal Diseases and Animal Pests (Emergency Outbreaks) Act 1991are available at http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0011/358769/Mins-Delegations-under-Animal-Diseases-Act-1991.pdfLegislationAnimal Diseases and Animal Pests (Emergency Outbreaks) Act 1991Animal Diseases and Animal Pests (Emergency Outbreaks) Regulation 2012Related policiesEmergency management - PoliciesOther related documentsAUSVETPLAN, Disease Strategy Avian influenza Version 3.4, 2011DefinitionsThe Act means the Animal Diseases and Animal Pest (Emergency Outbreaks) Act 1991POLICY TI-O-139 PAGE 3 OF 5HIGHLY PATHOGENIC AVIAN INFLUENZA (H7N7) MATILAND – CONTROL AND ERADICATIONVERSION 1
  4. 4. POLICY TI-O-139 PAGE 4 OF 5HIGHLY PATHOGENIC AVIAN INFLUENZA (H7N7) MATILAND – CONTROL AND ERADICATIONVERSION 1Control Area means any premises, place or area within New South Wales declared to be a controlarea under section 21 of the Act on account of avian influenzaInfected Place means any premises, place or area within New South Wales declared to be aninfected place under section 10 of the Act on account of avian influenza.Restricted Area means any premises, place or area within New South Wales declared to be arestricted area under section 15 of the Act on account of avian influenzaStamping out means the process of euthanasing of infected animals and those suspected of beinginfected on the Infected Place and where appropriate animals in a restricted area or a control areaif it is reasonably necessary to do so to prevent the spread of avian influenza.Superseded documentsNilReview date20/11/2013ContactDPI Animal Biosecurity (02) 6391 3412
  5. 5. WRITTENINSTRUMENTBIOSECURITY DOCUMENT: POL TI-O-139 SC Ref: - / - / WITRIM Ref: INT12/94582 DV Ref: - / - / -Highly Pathogenic Avian influenza (H7N7) Maitland- control anderadicationThe attached document is a WRITTEN INSTRUMENT issued with the concurrence of the Director-General of the Department of Primary Industries under Clause 8.3 of the Memorandum ofUnderstanding between the Director-General of the Department of Primary Industries and the LivestockHealth and Pest Authorities State Management Council.APPROVED APPROVEDIAN ROTH CVO FORB M CHRISTIE for R F SHELDRAKEDIRECTOR-GENERALDEPARTMENT OF PRIMARYINDUSTRIESTIM JOHNSTONA/CHIEF EXECUTIVE OFFICERSTATE MANAGEMENT COUNCILLIVESTOCK HEALTH AND PEST AUTHORITIESDate: 22.11.2012 Date: 22.11.2012

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