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NOTIFIABLE AVIAN INFLUENZA EXPERIENCES IN
SOUTH AFRICA AND NAI PREPAREDNESS
MEASURESMARCH 2006
NOTIFIABLE AVIAN INFLUENZA EXPERIENCES IN
SOUTH AFRICA AND NAI PREPAREDNESS
MEASURESMARCH 2006
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NAI EXPERIENCES IN SOUTH AFRICANAI EXPERIENCES IN SOUTH AFRICA
OUTBREAK OSTRICHES IN 2004H5N2 SUBTYPEEASTERN CAPE PROVINCE
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NAI EXPERIENCES IN SOUTH AFRICANAI EXPERIENCES IN SOUTH AFRICA
CONTROL MEASURES• CULLING POLICY• ADDITIONAL MEASURES
–30km control zone–Movement control measures–Countrywide export ban–Countrywide surveillance–Forward and backward
tracing
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EASTERN CAPE PROVINCEAVIAN INFLUENZAEASTERN CAPE PROVINCEAVIAN INFLUENZA
Serology• Test for >10% prevalence at 95% confidence• HI for ostrich serum• ELISA screening for chicken serum with HI confirmation
No. of Farms TestedNo. of Positive
Farms
Ostriches 519 19
Commercial Chickens
10 0
Farmyard Chickens 133 0
Pigs in area 330 0
Wild Birds 86 0
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EASTERN CAPE PROVINCEAVIAN INFLUENZAEASTERN CAPE PROVINCEAVIAN INFLUENZA
Virus isolation
• Embryonated eggs
• PCR & NASBA
No. of Farms Seropositive
Positive Virus Result
Number of ostrich farms
16
8 farms
(16748 tracheal and cloacal
swabs & post-mortems)
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EASTERN CAPE PROVINCEAVIAN INFLUENZAEASTERN CAPE PROVINCEAVIAN INFLUENZA
Eradication Campaign
• All ostriches on seropositive farms
• All poultry in 3km radius around seropositive farms
• Disinfection and minimum 30 day standstill of infected farms
• Controlled restocking programme
• Serological retesting of all ostrich farms in Province: All negative on two occasions.
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NAI EXPERIENCES IN SOUTH AFRICANAI EXPERIENCES IN SOUTH AFRICA
WESTERN CAPE PROVINCE
• SURVEILLANCE YIELDED POSITIVES ON SEROLOGY
• NO SICK OSTRICHES
• CONTROLLED SLAUGHTER
CHICKENS
• NEGATIVE ENTIRE COUNTRY
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NAI EXPERIENCES IN SOUTH AFRICANAI EXPERIENCES IN SOUTH AFRICA
EXTENSIVE SURVEILLANCE IN 2005• COMMERCIAL OSTRICH FARMS• COMMERICAL CHICKEN FARMS• NON-COMMERCIAL CHICKEN FARMS
DECLARATION NAI FREEDOM: • 15 SEPTEMBER 2005
NAI FREE STATUS ACCEPTED BY:• EU• OIE
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NAI PREPAREDNESS IN SOUTH AFRICANAI PREPAREDNESS IN SOUTH AFRICA
NAI PREPAREDNESS IN SOUTH AFRICA
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NAI PREPAREDNES MEASURES IN SOUTH AFRICANAI PREPAREDNES MEASURES IN SOUTH AFRICA
PREVENT INTRODUCTION OF NAI VIRUS• IMPORT CONTROL MEASURES
– LIVE POULTRY- NAI FREE COUNTRIES PAST 6 MONTHS
- PRE-IMPORT TESTING, QUARANTINE, RETESTED
– POULTRY PRODUCTS- MEAT: NAI FREE COUNTRIES PAST 6
MONTHS
- OTHER PRODUCTS: TREATMENT TO INACTIVATE VIRUS
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NAI PREPAREDNESS MEASURES IN SOUTH AFRICANAI PREPAREDNESS MEASURES IN SOUTH AFRICA
PREVENT INTRODUCTION OF NAI VIRUS
• IMPORT CONTROL MEASURES (cont)
–BIRDS
–OTHER SPECIES:
- PIGS, CATS
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NAI PREPAREDNESS MEASURES IN SOUTH AFRICANAI PREPAREDNESS MEASURES IN SOUTH AFRICA
PROOF OF CONTINUED FREEDOM• EXTENSIVE SURVEILLANCE
PROGRAMME– COMMERCIAL OSTRICHES– COMMERCIAL CHICKENS– NON-COMMERCIAL CHICKENS
• SURVEILLANCE IN MIGRATORY BIRDS
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NAI PREPAREDNESS MEASURES IN SOUTH AFRICANAI PREPAREDNESS MEASURES IN SOUTH AFRICA
IN CASE OF INTRODUCTION OF NAI VIRUS• CONTINGENCY PLAN
– SUSPECTED/CONFIRMED OUTBREAK
– QUARANTINE– MOVEMENT CONTROL– DEPOPULATION– VACCINATION
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NAI PREPAREDNESS MEASURES IN SOUTH AFRICANAI PREPAREDNESS MEASURES IN SOUTH AFRICA
ACTIVATION OF DISASTER MANAGEMENT SYSTEM
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NAI PREPAREDNESS MEASURES IN SOUTH AFRICANAI PREPAREDNESS MEASURES IN SOUTH AFRICA
MINISTER OF AGRICULTURE - ACTIVATION OF OTHER ROLE PLAYERS AT MINISTERIAL LEVEL
• MINISTER OF DEFENCE• MINISTER SAFETY AND SECURITY• DPLG:
– NATIONAL DISASTER MANAGEMENT
CASCADE:• NATIONAL CO-ORDINATION• PROVINCIAL CO-ORDINATION• LOCAL
– EXECUTION CONTROL ACTIVITIES
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