Saudi Arabia - 7 new outbreaks of highly pathogenic avian influenza H5N8 in birds in farms, Riyadh (OIE, April 29, 2018)

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Highly pathogenic avian influenza, Saudi Arabia

Information received on 01/05/2018 from Dr Ali Al Doweriej, Director General of Veterinary Health and Monitoring Department, Veterinary Health and Monitoring Department, Ministry of Environment, Water and Agriculture, RIYADH, Saudi Arabia

Summary Report type Follow-up report No. 5 Date of start of the event 19/12/2017 Date of confirmation of the event 20/12/2017 Report date 29/04/2018 Date submitted to OIE 01/05/2018 Reason for notification Recurrence of a listed disease Date of previous occurrence 29/01/2008 Manifestation of disease Clinical disease Causal agent Highly pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country Related reports Immediate notification (22/12/2017) Follow-up report No. 1 (02/01/2018) Follow-up report No. 2 (16/01/2018) Follow-up report No. 3 (13/02/2018) Follow-up report No. 4 (01/03/2018) Follow-up report No. 5 (29/04/2018)

New outbreaks (7)

Outbreak 1 ALkharj, ALkharj, Ar Riyad Date of start of the outbreak 20/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 85550 1200 1200 84350 0

Outbreak 2 Thadiq, Thadiq, Ar Riyad Date of start of the outbreak 21/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 135000 5000 750 134250 0

Outbreak 3 ALkharj, ALkharj, Ar Riyad Date of start of the outbreak 24/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 1136980 1011 1011 1135969 0

Outbreak 4 ALkharj, ALkharj, Ar Riyad Date of start of the outbreak 25/02/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 659411 2144 2144 657267 0

Outbreak 5 Zulfi, Zulfi, Ar Riyad Date of start of the outbreak 07/03/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 143000 3000 3000 140000 0

Outbreak 6 ALkharj, ALkharj, Ar Riyad Date of start of the outbreak 30/03/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 507790 231 231 507559 0

Outbreak 7 ALkharj, ALkharj, Ar Riyad Date of start of the outbreak 30/03/2018 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 355000 3000 3000 352000 0

Summary of outbreaks Total outbreaks: 7 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 3022731 15586 11336 3011395 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 0.52% 0.38% 72.73% 100.00% *Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive

Control measures Measures applied Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Traceability Quarantine Official disposal of carcasses, by-products and waste Stamping out Disinfection 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 Riyadh Veterinary Diagnostic Laboratory (National laboratory) Birds real-time PCR 09/04/2018 Positive

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

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