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The OIE’s approach to zones and compartments
David WilsonDirector International Trade
OIE
Workshop on OIE international standardsBeijing 2005
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zoning/compartmentalisation
‘zoning’ and ‘regionalisation’ have the same meaning – ‘zoning’ is now used
zoning and compartmentalisation are procedures implemented by a country to define sub-populations of different animal health
status within its territory in accordance with the recommendations in the OIE
Codes for the purpose of international trade
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zoning/compartmentalisation
zoning/compartmentalisation allows a concentration of resources where there is greatest chance of success in controlling or eradicating a disease gaining or maintaining market access for certain
commodities
where freedom of the whole country from the disease is not possible or practicable
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zoning/compartmentalisation
zoning applies to an animal sub-population defined on a geographical basis
compartmentalisation applies to an animal sub-population defined by management practices relating to biosecurity
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OIE definitions
Zone/Region a clearly defined part of a country …
Compartment one or more establishments (premises in which
animals are kept) under a clearly defined common biosecurity management system …
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OIE definitions
… containing an animal sub-population with a distinct health status with respect to a specific disease or diseases for which required surveillance, control and biosecurity measures have been applied for the purpose of international trade
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application of the concepts
the extent of a zone is established on the basis of natural, artificial or legal boundaries
the requirements for a compartment are established on the basis of management practices relating to biosecurity
by the Veterinary Administration
geographic considerations and sound management practices play a role in the application of both concepts
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FREE ZONE
FREE ZONE
BUFFERZONE
railway
major road
river
zones
BUFFER
ZONE
INFECTED ZONE
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BREEDINGFLOCK
BREEDINGFLOCK
FEEDSUPPLY
GROWINGFLOCK
SLAUGHTERHOUSE
GROWINGFLOCK
Equipment
Birds
Equipm
ent
Birds
Equipment
Equ
ipm
ent
Fee
dEquipment
Compartment
Equipment
Birds
Feed
Feed
Equipment
Birds
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application of the concepts
there are Code recommendations for zones and compartments for diseases for which the concepts are appropriate
the recommendations depend on epidemiology of the disease environmental factors appropriate and applicable biosecurity measures necessary surveillance
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epidemiology
how does the disease spread ? by live animals / humans ? by meat / eggs / semen ? by farm or veterinary equipment ? by wind ? by biting insects ?
what species does it affect ? clinical signs ?
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environmental factors
temperature / humidity natural barriers
ocean / major river mountain range
artificial barriers state / county boundary road / rail system
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biosecurity measures
management regulations re biosecurity dedicated equipment staff showering in-and-out animals housed vs free range imposed movement controls
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surveillance
necessary surveillance for presence / absence of pathogen prevalence of disease seasonal factors eg biting insects strains of virus eg FMD intermediate hosts eg tick-borne diseases
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application of the concepts
a Veterinary Administration must document the measures taken to identify the animal sub-population recognise its distinct health status maintain its distinct health status
dossier will be as detailed as situation requires compartmentalisation requires good cooperation
and trust between industry and govt
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animal sub-population
dairy cattle herds in 4 adjacent counties bison and buffalo in Alberta wild pig population in a forest in Germany poultry flocks managed by Tysons Inc
as a unit wild waterfowl in a water catchment area during
the breeding season beef cattle over 3 years of age in the UK
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examples of health status
infected free with vaccination free without vaccination seasonally free unknown
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application of the concepts
if an exporting country wants to define a zone or compartment within its territory for an OIE-listed disease, it needs to implement the recommendations stipulated in the Code for setting up and maintaining such a zone or compartment or equivalent measures
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application of the concepts
an importing country should recognise the existence of this zone or compartment, subject to the application of the appropriate recommendations in the Code
with regard to the importation, or transit through its territory, of commodities from that zone or compartment
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Uses
in disease control / erradication campaign progressive zoning/compartmentalisation allows
stepwise approach allows concentration of resources where greatest
chance of success
in trade zone to gain / maintain market access for certain
commodities where whole country freedom not
possible / practicable
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World Organisation for Animal Health
12 rue de Prony75017 Paris, France
Tel: 33 (0)1 44 15 18 88 Fax: 33 (0)1 42 67 09 87
Email: [email protected]://www.oie.int