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FAO REGIONAL WORKSHOP ON NOTIFIABLE AVIAN INFLUNZA IN SOUTHERN AFRICA PRETORIA (SOUTH AFRICA ) 07 - 09 MARCH 2006. HIGHLY PATHOGENIC AVIAN INFLUENZA: EPIDEMIOLOGICAL SITUATION AND AU/IBAR STRATEGY FOR PREVENTION AND CONTROL. CONTENT. 1. EPIDEMIOLOGICAL SITUATION IN AFRICA

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Presentation Transcript
slide1
FAO REGIONAL WORKSHOP ON NOTIFIABLE AVIAN INFLUNZA IN SOUTHERN AFRICA PRETORIA (SOUTH AFRICA) 07- 09MARCH 2006

HIGHLY PATHOGENIC AVIAN INFLUENZA: EPIDEMIOLOGICAL SITUATION AND AU/IBAR STRATEGY FOR PREVENTION AND CONTROL

Slide No.

content
CONTENT
  • 1. EPIDEMIOLOGICAL SITUATION IN AFRICA
  • 2. AU/IBAR STRATEGY
    • 2.1. Before outbreaks
    • 2.1. Suggestion to address the current situation
  • 3. CONCLUSION

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1 epidemiological situation
1. EPIDEMIOLOGICAL SITUATION
  • Outbreaks confirmed:
    • NIGERIA, 126 Farms, + 445,000 chickens destroyed
    • NIGER: 1 Region 20,000
    • EGYPT: 7 Governates
  • Rumors and Suspicions:
    • North of Mali
    • Senegal
    • Mauritania
    • Chad
    • Cameroon
    • Ethiopia
    • Kenya

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2 au ibar strategy
2. AU/IBAR STRATEGY

2.1. BEFORE OUTBREAKS

- PREVENTION

- CONTROL AND/OR ERADICATION

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prevention
PREVENTION

NATIONAL LEVEL

  • Awareness (sensitisation of stakeholders, training of professional staff):
  • Emergency preparedness plans (EPP):
  • Epidemiological surveillance (passive and active)

REGIONAL LEVEL

  • Set up task force
  • Emergency funds and vaccines
  • Regional laboratories
  • Harmonisation and coordination actions
  • International Cooperation

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national level
NATIONAL LEVEL
  • * RE-INFORCEMENT AND STRENGHTENING OF ESTABLISHED EPIDEMIO-SURVEILLANCE SYSTEM AND EXTENSION TO HPAI
  • * ESTABLISHMENT AND/OR REVITALIZATION OF EPIDEMIO-SURVEILLANCE SYSTEM IN NONE PACE COUNTRIES
  • * HIGH RISK COUNTRIES FOR INTRODUCTION OF HPAI: EGYPT, ETHIOPIA, KENYA, TANZANIA, CENTRAL AND WESTERN AFRICA

Slide No.

national level1
NATIONAL LEVEL
  • CONTROL OF MOVEMENT OF BIRDS AND PRODUCTS
    • Border controls
    • Ban on importation from infected countries and zone

Slide No.

regional level
REGIONAL LEVEL
  • Task Force
  • Emergency Funds :
    • Compensation
    • Vaccine stock
  • Reinforcement of established ESS and their extension to none PACE countries
  • Harmonization and Coordination of actions
    • Regional harmonisation meetings
    • International Cooperation:

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control and or eradication
CONTROL AND/OR ERADICATION

3 options:

Option 1: Stamping out

- Destruction of infected and at-risk (depending on likelihood that birds are infected) poultry.

- As quickly as possible (within 24 h)

- Samples taken

- Vaccination of workers applying culling.

- Humane destruction

- Accurate records

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national level2
NATIONAL LEVEL

Option 2: Modified stamping out using vaccination

- - Destruction of infected poultry

- USE OF VACCINATION: Reduces susceptibility to infection and decreases shedding therefore reduces the incidence of new cases and viral load in the environment. Tool to maximize bio-security.

- Vaccination in response to an outbreak: ring vaccination or vaccination of designated high-risk poultry.

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national level3
NATIONAL LEVEL

Option 3: Blanket vaccination

-Pre-emptive “baseline” vaccination of all part of a population of poultry may be used if the risk of infection is high and/or the consequences of infection are very serious.

In addition to all 3 options:

Slide No.

national level4
NATIONAL LEVEL
  • EFFECTIVE SURVEILLANCE
  • BIOSECURITY: Bio-containment and bio-exclusion
  • CONTROL OF MOVEMENT OF BIRDS AND PRODUCTS

- Movement of items from infected zones

- Border controls

  • DISPOSAL OF CARCASSES AND POTENTIALLY INFECTIVE MATERIAL IN A BIOSECURE MANNER

Slide No.

regional level1
REGIONAL LEVEL
  • Avail Emergency funds
  • International Cooperation
  • Harmonization and Coordination: sharing disease information

Slide No.

criteria for choice
CRITERIA FOR CHOICE

CHOICE OF OPTION: COUNTRY DECISION BASED

ON:

- Epidemiological situation: national and regional

- Available resources: human, financial etc

- AO relevant information

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2 au ibar strategy contd
2. AU/IBAR STRATEGY (contd)

2.2. Suggested strategy to address the current situation

  • Preliminary Lessons learnt from the current situation

- delay in laboratory confirmation

- Difficulties in sending samples to reference laboratories

- Difficulties to determine the source of infection

- Absence of means to implement the modified stamping without vaccination strategy

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2 au ibar strategy contd1
2. AU/IBAR STRATEGY (contd)
        • Suggestions to countries in West Africa

- Stamping out: country with 50 million

1% of chicken population and 3 $/head: 1,500,000 $

5% of chicken population and 3 $/head: 7,500,000 $

10%: 15,000,000 $

  • + cost of other measures
  • - Modified stamping out: Half to be destroyed and half to be vaccinated

750 000 $

3,750,000 $

7,500,000 $

+/- cost of vaccination and + cost of other measures

Slide No.

2 au ibar strategy contd2
2. AU/IBAR STRATEGY (contd)
  • Vaccination (1 year)

In modified stamping out: half to be vaccinated

0.5 % 250 000 heads X 0.1 $/head X 2 X 2: 100,000 $

2.5 %: 500,000 $

5 %: 1,000,000 $

+ personnel, vaccine storage and transport etc

Blanket vaccination:

80 %: 16,000,000 $ + personnel, vaccine storage and transport etc

Slide No.

3 conclusion
3. CONCLUSION
  • Best choice: seems to be modified stamping out.
  • Consider all the conditions for its efficient implementation
  • Vaccinations: Very Costly but could be used in some circumstances.
  • Suggestion for commercial farms: Kill all chickens, store and sell and then apply sanitary vacuum before re-stocking.

Slide No.

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