Italy - 8 new outbreaks of highly pathogenic avian influenza H5N8 in backyard birds and farms, Lombardia, Veneto (OIE, October 20, 2017)

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Highly pathogenic avian influenza, Italy

Information received on 20/10/2017 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. 29 Date of start of the event 20/01/2017 Date of confirmation of the event 21/01/2017 Report date 20/10/2017 Date submitted to OIE 20/10/2017 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)

New outbreaks (8)

Outbreak 1 (HPAI_MN_2017_52) Goito, MANTOVA, LOMBARDIA Date of start of the outbreak 12/10/2017 Outbreak status Resolved (18/10/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 6720 6376 344 6376 0 Affected population The positivity regards a farm of fattening turkeys. Culling of 6376 turkeys has been completed on 18 October 2017 and all 6720 turkeys have been safely disposed of.

Outbreak 2 (HPAI_BG_2017_49) Blello, BERGAMO, LOMBARDIA Date of start of the outbreak 12/10/2017 Outbreak status Resolved (16/10/2017) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 22 14 11 11 0 Affected population The positivity regards a backyard farm.Culling of 11 animals has been completed on 12 October 2017 (14 broilers, 6 laying hens, 2 ducks) and all 22 animals have been safely disposed of.

Outbreak 3 (HPAI_BS_2017_50) San gervasio bresciano, BRESCIA, LOMBARDIA Date of start of the outbreak 13/10/2017 Outbreak status Resolved (17/10/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 16214 2036 36 16178 0 Affected population The positivity regards a farm of fattening turkeys. Culling of 16178 turkeys has been completed on 16 October 2017 and all 16214 turkeys have been safely disposed of.

Outbreak 4 (HPAI_SO_2017_51) Piateda, SONDRIO, LOMBARDIA Date of start of the outbreak 16/10/2017 Outbreak status Resolved (16/10/2017) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 35 35 35 0 0 Affected population The positivity regards a backyard farm. All the animals (1 goose, 2 turkeys, 29 laying hens, 3 broilers) have been safely disposed.

Outbreak 5 (HPAI_PD_2017_53) Abano Terme, PADOVA, VENETO Date of start of the outbreak 16/10/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 11 10 5 6 0 Affected population The positivity regards a backyard farm, (5 laying hens, 6 swan).

Outbreak 6 (HPAI_PD_2017_54) Albignasego, PADOVA, VENETO Date of start of the outbreak 16/10/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Backyard Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 42 42 0 42 0 Affected population The positivity regards a backyard farm, ( 8 geese, 34 ducks).

Outbreak 7 (HPAI_BS_2017_55) Alfaniello, BRESCIA, LOMBARDIA Date of start of the outbreak 18/10/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 29675 9035 35 Affected population The positivity regards a farm of fattening turkeys.

Outbreak 8 (HPAI_BS_2017_56 ) Alfaniello, BRESCIA, LOMBARDIA Date of start of the outbreak 18/10/2017 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 8981 4036 36 Affected population The positivity regards a farm of fattening turkeys.

Summary of outbreaks Total outbreaks: 8 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Birds 61700 21584 502 22613 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 34.98% 0.81% 2.33% ** *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 polymerase chain reaction (PCR) 17/10/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 13/10/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time PCR 19/10/2017 Positive Experimental Zooprophylactic Institute (IZSVe), Padova (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 13/10/2017 Positive

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

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