Low pathogenic avian influenza (poultry),
South Africa
Information received on 24/12/2013 from Dr Bothle Michael Modisane, Chief Director , Department of Agriculture, Forestry and Fisheries, Animal Production and Health, PRETORIA, South Africa
Summary
Report type Immediate notification
Date of start of the event 20/10/2013
Date of confirmation of the event 04/11/2013
Report date 24/12/2013
Date submitted to OIE 24/12/2013
Date event resolved 11/08/2014
Reason for notification Recurrence of a listed disease
Date of previous occurrence 24/04/2013
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus
Serotype H7N1
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (24/12/2013)
Follow-up report No. 1 (19/08/2014)
Follow-up report No. 2 (07/10/2014)
New outbreaks (3)
Outbreak 1 (LPAI_2013H7N1_001) LPAI_2013H7N1_001, Blue Crane Route, EASTERN CAPE PROVINCE
Date of start of the outbreak 20/10/2013
Outbreak status Resolved (22/05/2014)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 675 23 0 0 0
Affected population Commercial ostriches
Outbreak 2 (LPAI_2013H7N1_002) LPAI_2013H7N1_002, Blue Crane Route, EASTERN CAPE PROVINCE
Date of start of the outbreak 20/10/2013
Outbreak status Resolved (31/07/2014)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 988 13 0 0 0
Affected population Commercial ostriches
Outbreak 3 (LPAI_2013H7N1_003) LPAI_2013H7N1_003, Blue Crane Route, EASTERN CAPE PROVINCE
Date of start of the outbreak 20/11/2013
Outbreak status Resolved (11/08/2014)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1243 28 0 0 0
Affected population Commercial ostriches
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2906 64 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 2.20% 0.00% 0.00% 0.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments LPAI positive serology detected on pre-slaughter/pre-movement routine testing. Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2013).
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Disinfection / Disinfestation
  • Quarantine
  • Modified stamping out
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Deltamune (Private Laboratory) Birds antibody detection ELISA 04/11/2013 Positive
Deltamune (Private Laboratory) Birds haemagglutination inhibition test (HIT) 04/11/2013 Positive
Deltamune (Private Laboratory) Birds polymerase chain reaction (PCR) 10/11/2013 Negative
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations