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Exotic Disease Response (EDR) TrainingField Veterinarian

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During this session we will cover the following processes:

• Prepare for Surveillance Visit• Conduct Surveillance Visit• Return from Field Activities

Training Agenda

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Session Outcomes At the end of this session you should be able to:• interact with the farm key decision maker• develop an action plan to complete surveillance tasks• describe Red, Yellow and Green zones• clean and disinfect on and off a farm• accurately record clinical observations, fill out visit documents and

label samples• dispose of, or submit for treatment, stores that are (or may be)

contaminated• complete self decontamination

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Surveillance Process

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The Role of a Veterinarian in an Exotic Disease Response • Making Diagnoses• Collecting and verifying information• Interacting with farmers

You are the face of the response

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SurveillanceManager

Public Report Coordinator

GISCoordinator

Field VisitCoordinator

AdministrationCoordinator

InvestigationsCoordinator

TracingCoordinator

Field TeamLeader

FieldVet

SampleReception

TeamLeader

AdminTeam

Leader

AdminOfficer

GISOfficer

Call CentreTeam

Leader

ReportEvaluation

Team Leader

Call CentreOperator

ReportEvaluation

Officer

TracingTeam

Leader

TracingOfficer

FieldInvestigator

Vet

TracingEvaluation

Officer

Escalation Path…

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Prepare for Surveillance Visit

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Prepare for Surveillance VisitAt the end of this topic you should be able to:• advise the Farm Key Decision Maker what requirements

you have • collect the required stores for the visit

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Liaising with Farm Key Decision Maker• Usually you will be invited onto farm• Others will resent the imposition…Remember at all times:• Be clear – make things black and white. Leave no room for appeal• Act calm and confident• Be honest – don’t hide information• Involve farm key decision maker in planning• Keep them involved/updated on progress• Thank them for their cooperation

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Conduct Surveillance Visit – 1 of 3

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Conduct Surveillance Visit – 2 of 3

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Conduct Surveillance Visit – 3 of 3

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Conduct Surveillance VisitAt the end of this topic you should be able to:

• Develop an action plan to complete surveillance tasks• Describe Red, Yellow and Green zones• Clean and disinfect on and off a farm• Accurately record clinical observations• Correctly fill out visit documents and label samples

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Sampling SizeExpected prevalence

If prevalence is lower, sample size is bigger.

Group size If the group sampled is small the proportion sampled is bigger – 100% for a very small group.

Confidence (%) The pre-determined likelihood that a test result is true, ie 95% confident that the animal/herd/region is -ve

Test SE Sample size may be increased to allow for imperfect test Sensitivity

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Sampling Groups

Cows and calves

Sheep

Cattle

Youngstock

Wethers on run-off

Ewes and lambs

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Red, Yellow and Green Zones

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• Cleaning and disinfection

• New concept based on IDC procedures

• Red Yellow Green Zones

Red, Yellow and Green Zones

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Green (Clean) Zone

Where potentially infectious or contaminated material should not be present, or has been

eliminated by cleaning and disinfection

The Zones

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Yellow (Disinfection) Zone

The intermediate area between the green and red zones where contaminated materials are

disinfected

The Zones

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Red (Dirty) Zone

Where potentially contaminated or infectious material or animals are present

The Zones

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• Clean and disinfect on

Green Yellow Red

• Clean and disinfect off

Red Yellow Green

Conduct Surveillance Visit

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Clinical Observation

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Clean and Disinfect Exercise• Nominate a Team Leader• Sort gear required to complete tasks• Decide suitable means of transferring people, equipment

and samples:Green Yellow Red Yellow Green

• Prepare gear required for tasks:– Inspect 200 sheep / Collect 3 serum samples– Take 60 temperatures

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Return from Field Activities – 1 of 2

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Return from Field Activities – 2 of 2

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Return from Field ActivitiesAt the end of this session you should be able to:• dispose of, or submit for treatment, stores that are (or

may be) contaminated• describe how to complete self decontamination• complete visit documents

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SummaryDuring this session we covered:• interacting with the farm key decision maker• developing an action plan to complete surveillance tasks• Red, Yellow and Green zones• cleaning and disinfecting on and off a farm• accurately recording clinical observations, filling out visit

documents and labelling samples• disposing of, or submitting for treatment, stores that are (or

may be) contaminated• completing self decontamination