Managing a Reportable Disease Tuberculosis

Transcription

1 Managing a Reportable Disease Tuberculosis The New Zealand Experience Ira Stapp Meat Industry Services Technical Manager

2 About tuberculosis 2nd only to HIV/AIDS greatest killer worldwide due to single infectious agent. 2012, 8.6 million people fell ill and 1.3 million died from TB. Over 95% TB deaths occur in low- middle-income countries 2012, children ill, HIV children died of TB. Leading killer of people with HIV causing one fifth of all deaths. Multi-drug resistant TB in virtually all countries surveyed.

3 What is tuberculosis? Bacterial disease Mycobacterium tuberculosis Affects cattle, deer and humans Spread by possums and ferrets Humans contract Tb from infected animals and other humans Causes lesions containing tubercles.

4 What do tuberculosis bacteria look like X1000?

5 What do tuberculosis bacteria look like X40,000?

6 What does tuberculosis look like? Destroys organs and their function Severe illness and may cause death

7 What does tuberculosis look like?

8 What does tuberculosis look like?

9 What does tuberculosis look like?

10 What does tuberculosis look like?

11 Managing Tuberculosis What does tuberculosis look like?

12 What does tuberculosis do?

13 How worldwide spread is it?

14 Tuberculosis in New Zealand Introduced in cattle by early settlers Established throughout the country. Affects hundreds of people Eradication costing $111 million per year

15 How does tuberculosis affect the NZ meat industry?

16 How much found in deer?

17 How much found in cattle?

18 Why the 2008 spike?

19 How much is found in feral deer?

20 How many cattle carcasses are condemned?

21 How is tuberculosis spread?

22 How is tuberculosis spread? Possums unusually susceptible to TB Disease quickly progresses to an infectious stage. Lesions turn into weeping, pus filled sores, infect pasture

23 The New Zealand situation; Why are possums so difficult to eradicate?

24 How is tuberculosis spread?

25 What s the result for the farmer?

26 What was the result for the farmer? 4 years to recover from the loss 150 cows condemned at $3,000 each Loss of calf market at $200 each Unable to lease service bulls

27 Tb Control

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29 What s the tuberculosis management plan? Possum eradication by poison bait Testing cattle and deer herd for tuberculosis Controlling movement of infected farm cattle and deer throughout New Zealand Intensified inspection procedures for reactor cattle and deer suspect lesions Submission of suspect lesions for laboratory diagnosis

30 How re possums controlled?

31 How re possums controlled?

32 How re possums controlled?

33 Managing Tuberculosis How re possums controlled?

34 How are possums controlled?

35 How is tuberculosis being spread?

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37 Movement control Restricted movement of animals from farms that have tuberculosis Clear herd test following last TB case Animals clear to a further skin test applied within 60 days prior to movement

38 Managing Tuberculosis Road control We re all doing our bit!

39 AsureQuality s Role

40 What are AsureQuality s legislative requirements? Order s objective is to establish feasibility of eradicating bovine tuberculosis Appoints TBfree New Zealand to manage the Plan Obligates persons to submit suspect lesions for diagnosis Obligates laboratories to submit results to TBfree New Zealand MPI legislate inspection procedures

41 What s AsureQuality s role? Training and competency assessing vector poison bait operators

42 What s AsureQuality s role? Testing every cattle and deer herd for tuberculosis; 4 million annually

43 Reactor to the tuberculosis test

44 What s AsureQuality s role? Inspecting all cattle (2,352,425pa) and deer (452,721) for tuberculosis

45 What s a suspect Tb lesion look like?

46 What happens when a suspect lesion is found?

47 What happens when a suspect lesion is found?

48 How s it diagnosed?

49 What s the result of the laboratory s diagnostic test?

50 Further action from the laboratory s result TBfree Because of huge impact on farm, TBfree may request culture and PCR test Disposition at works Carcass released to local market if confirmed lesions only in head, gut or lungs All condemned one or more confirmed lesions in either carcass, kidney, liver, spleen

51 Are we winning?

52 Questions?

53 Thank You! Phone: Connect with us: