Italy - 7 new outbreaks of highly pathogenic avian influenza H5N8 in birds in farms, Lombardia (OIE, November 23, 2017)

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Highly pathogenic avian influenza, Italy

Information received on 23/11/2017 from Dr Silvio Borrello, Chief Veterinary Officer, Food Safety and Collegial Bodies for Health Protection, Minist?re de la Sant?, Department for Veterinary Public Health, Rome, Italy

Summary Report type Follow-up report No. 32 Date of start of the event 20/01/2017 Date of confirmation of the event 21/01/2017 Report date 23/11/2017 Date submitted to OIE 23/11/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 17/01/2015 Manifestation of disease Clinical disease 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 (23/01/2017) Follow-up report No. 1 (24/01/2017) Follow-up report No. 2 (26/01/2017) Follow-up report No. 3 (03/02/2017) Follow-up report No. 4 (08/02/2017) Follow-up report No. 5 (16/02/2017) Follow-up report No. 6 (17/02/2017) Follow-up report No. 7 (24/02/2017) Follow-up report No. 8 (01/03/2017) Follow-up report No. 9 (03/03/2017) Follow-up report No. 10 (17/03/2017) Follow-up report No. 11 (30/03/2017) Follow-up report No. 12 (03/04/2017) Follow-up report No. 13 (11/04/2017) Follow-up report No. 14 (13/04/2017) Follow-up report No. 15 (31/05/2017) Follow-up report No. 16 (21/07/2017) Follow-up report No. 17 (28/07/2017) Follow-up report No. 18 (31/07/2017) Follow-up report No. 19 (03/08/2017) Follow-up report No. 20 (07/08/2017) Follow-up report No. 21 (10/08/2017) Follow-up report No. 22 (19/08/2017) Follow-up report No. 23 (25/08/2017) Follow-up report No. 24 (31/08/2017) Follow-up report No. 25 (07/09/2017) Follow-up report No. 26 (15/09/2017) Follow-up report No. 27 (02/10/2017) Follow-up report No. 28 (12/10/2017) Follow-up report No. 29 (20/10/2017) Follow-up report No. 30 (27/10/2017) Follow-up report No. 31 (10/11/2017) Follow-up report No. 32 (23/11/2017)

New outbreaks (7)

Outbreak 1 (HPAI_CR_2017_74) Scandolara ripa d''oglio, CREMONA, LOMBARDIA Date of start of the outbreak 08/11/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 13642 13642 17 Affected population The positivity regards a commercial farm of fattening turkeys.

Outbreak 2 (HPAI_BS_2017_76) Pralboino, BRESCIA, LOMBARDIA Date of start of the outbreak 09/11/2017 Outbreak status Resolved (13/11/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 76310 148 48 76262 0 Affected population The positivity regards a layer hens farming. Culling of 76262 layer hens has been completed on 13 november 2017 and all 76310 animals have been safely disposed of.

Outbreak 3 (HPAI_BS_2017_77) Milzano, BRESCIA, LOMBARDIA Date of start of the outbreak 09/11/2017 Outbreak status Resolved (14/11/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 45694 50 30 45664 0 Affected population The positivity regards a layer hens farming. Culling of 45664 layer hens has been completed on 14 november 2017 and all 45694 animals have been safely disposed of.

Outbreak 4 (HPAI_BS_2017_78) Pralboino, BRESCIA, LOMBARDIA Date of start of the outbreak 10/11/2017 Outbreak status Resolved (14/11/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 13592 307 257 13335 0 Affected population The positivity regards a farm of broilers. Culling of 13335 broilers has been completed on 14 november 2017 and all 13592 animals have been safely disposed of.

Outbreak 5 ( HPAI_BS_2017_79) Pavone del Mella, BRESCIA, LOMBARDIA Date of start of the outbreak 10/11/2017 Outbreak status Resolved (15/11/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 17620 1561 61 17559 0 Affected population The positivity regards a layer hens farming. Culling of 17559 layer hens has been completed on 14 november 2017 and all 17620 animals have been safely disposed of.

Outbreak 6 (HPAI_BS_2017_75) Pavone del ;ella, BRESCIA, LOMBARDIA Date of start of the outbreak 10/11/2017 Outbreak status Resolved (15/11/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 24186 1035 35 24151 0 Affected population The positivity regards a layer hens farming. Culling of 24151 layer hens has been completed on 15 november 2017 and all 24186 animals have been safely disposed of.

Outbreak 7 (HPAI_BS_2017_80) Gambara, BRESCIA, LOMBARDIA Date of start of the outbreak 22/11/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 60000 100 Affected population The positivity regards a farm of broilers.

Summary of outbreaks Total outbreaks: 7 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 251044 16843 448 176971 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 6.71% ** ** ** *Removed from the susceptible population through death, destruction and/or slaughter **Not calculated because of missing information

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments The National Reference Laboratory has sequenced HPAI subtype H5N8. A protection zone of 3 km and a surveillance zone of 10 km have been established.

Control measures Measures applied Movement control inside the country Screening Traceability Official disposal of carcasses, by-products and waste Stamping out Zoning Vaccination prohibited No treatment of affected animals Measures to be applied Disinfection

Diagnostic test results Laboratory name and type Species Test Test date Result Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds nested RT-PCR 07/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 28/10/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 03/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 06/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 08/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 08/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 10/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 15/11/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 22/11/2017 Positive

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

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