OIE: Highly pathogenic avian influenza, South Africa

Information received on 28/01/2019 from Dr Bothle Michael Modisane, Chief Director , Department of Agriculture, Forestry and Fisheries, Animal Production and Health, PRETORIA, South Africa

Summary

Report type	Follow-up report No. 39
Date of start of the event	19/06/2017
Date of confirmation of the event	22/06/2017
Report date	28/01/2019
Date submitted to OIE	28/01/2019
Reason for notification	New strain of a listed disease in the country
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N8
Nature of diagnosis	Clinical, Laboratory (advanced)
This event pertains to	a defined zone within the country
Related reports	Immediate notification (22/06/2017) Follow-up report No. 1 (26/06/2017) Follow-up report No. 2 (10/07/2017) Follow-up report No. 3 (31/07/2017) Follow-up report No. 4 (03/08/2017) Follow-up report No. 5 (07/08/2017) Follow-up report No. 6 (11/08/2017) Follow-up report No. 7 (22/08/2017) Follow-up report No. 8 (25/08/2017) Follow-up report No. 9 (31/08/2017) Follow-up report No. 10 (05/09/2017) Follow-up report No. 11 (08/09/2017) Follow-up report No. 12 (15/09/2017) Follow-up report No. 13 (22/09/2017) Follow-up report No. 14 (29/09/2017) Follow-up report No. 15 (06/10/2017) Follow-up report No. 16 (17/10/2017) Follow-up report No. 17 (30/10/2017) Follow-up report No. 18 (13/11/2017) Follow-up report No. 19 (28/11/2017) Follow-up report No. 20 (08/12/2017) Follow-up report No. 21 (15/12/2017) Follow-up report No. 22 (09/01/2018) Follow-up report No. 23 (22/01/2018) Follow-up report No. 24 (02/02/2018) Follow-up report No. 25 (21/02/2018) Follow-up report No. 26 (01/03/2018) Follow-up report No. 27 (09/03/2018) Follow-up report No. 28 (26/03/2018) Follow-up report No. 29 (17/04/2018) Follow-up report No. 30 (14/05/2018) Follow-up report No. 31 (28/05/2018) Follow-up report No. 32 (08/06/2018) Follow-up report No. 33 (18/07/2018) Follow-up report No. 34 (24/08/2018) Follow-up report No. 35 (14/09/2018) Follow-up report No. 36 (02/11/2018) Follow-up report No. 37 (27/11/2018) Follow-up report No. 38 (14/12/2018) Follow-up report No. 39 (28/01/2019)

New outbreaks (5)

Outbreak 1 (HPAI_H5N8_2017_197)

HPAI_H5N8_2017_197, Witzenberg, Western Cape Province

Date of start of the outbreak

13/08/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	3634	25	7	0	0

Affected population

Commercial ostriches

Outbreak 2 (HPAI_H5N8_2017_200)

HPAI_H5N8_2017_200, Oudtshoorn, Western Cape Province

Date of start of the outbreak

26/09/2018

Outbreak status

Resolved (10/12/2018)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	1897	111	111	0	0

Affected population

Commercial ostriches

Outbreak 3 (HPAI_H5N8_2017_198)

HPAI_H5N8_2017_198, Hessequa, Western Cape Province

Date of start of the outbreak

27/09/2018

Outbreak status

Resolved (04/12/2018)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	500	10	10	0	0

Affected population

Commercial ostriches

Outbreak 4 (HPAI_H5N8_2017_199)

HPAI_H5N8_2017_199, Hessequa, Western Cape Province

Date of start of the outbreak

19/11/2018

Outbreak status

Resolved (26/12/2018)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	390	6	5	0	0

Affected population

Commercial ostriches

Outbreak 5 (HPAI_H5N8_2017_201)

HPAI_H5N8_2017_201, City of Cape Town, Western Cape Province

Date of start of the outbreak

20/11/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	112	7	0	0	0

Affected population

Commercial ostriches

Summary of outbreaks

Total outbreaks: 5

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	6533	159	133	0	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	2.43%	2.04%	83.65%	2.04%

*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	Coordinates modified to protect confidentiality as required by South African Legislation.

Control measures

Measures applied	Surveillance within containment and/or protection zone Traceability Quarantine Vaccination prohibited No treatment of affected animals
Measures to be applied	Official destruction of animal products Official disposal of carcasses, by-products and waste Stamping out Disinfection

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.