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Mexico - 19 new outbreaks of highly pathogenic avian influenza H7N3 in birds (OIE, April 8, 2016)

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  • Mexico - 19 new outbreaks of highly pathogenic avian influenza H7N3 in birds (OIE, April 8, 2016)

    Highly pathogenic avian influenza,
    Mexico
    Information received on 08/04/2016 from Dr Joaqu?n Braulio Delgadillo ?lvarez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA) Secretar?a de Agricultura, Ganader?a, Desarrollo Rural, Pesca y Alimentaci?n, Ministerio de Agricultura, Ganader?a, Desarrollo rural, Pesca y Alimentaci?n, Mexico, Mexico
    Summary
    Report type Follow-up report No. 2
    Date of start of the event 09/03/2015
    Date of confirmation of the event 09/03/2015
    Report date 08/04/2016
    Date submitted to OIE 08/04/2016
    Reason for notification First occurrence of a listed disease
    Manifestation of disease Clinical disease
    Causal agent Virus de la influenza aviar altamente pat?gena
    Serotype H7N3
    Nature of diagnosis Clinical, Laboratory (basic)
    This event pertains to a defined zone within the country
    Related reports Immediate notification (08/04/2015)
    Follow-up report No. 1 (03/03/2016)
    Follow-up report No. 2 (08/04/2016)
    New outbreaks (19)
    Outbreak 1 Encarnaci?n de Diaz, Encarnaci?n de Diaz, JALISCO
    Date of start of the outbreak 28/01/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 414231 15 0 0 0
    Outbreak 2 Encarnaci?n de Diaz, Encarnaci?n de Diaz, JALISCO
    Date of start of the outbreak 28/01/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 372331 15 0 0 0
    Outbreak 3 Encarnaci?n de Diaz, Encarnaci?n de Diaz, JALISCO
    Date of start of the outbreak 28/01/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 405346 15 0 0 0
    Outbreak 4 Encarnaci?n de Diaz, Encarnaci?n de Diaz, JALISCO
    Date of start of the outbreak 28/01/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 402543 15 0 0 0
    Outbreak 5 Encarnaci?n de Diaz, Encarnaci?n de Diaz, JALISCO
    Date of start of the outbreak 28/01/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 417032 15 0 0 0
    Outbreak 6 Tepanco de L?pez, Tepanco de L?pez, PUEBLA
    Date of start of the outbreak 05/02/2016
    Outbreak status Resolved (02/03/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 42117 0 42117 0
    Affected population Aves de postura comercial
    Outbreak 7 Tehuac?n, Tehuac?n, PUEBLA
    Date of start of the outbreak 23/02/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 209900 0 0 0
    Affected population Aves de postura
    Outbreak 8 Jocotepec, Jocotepec, JALISCO
    Date of start of the outbreak 24/02/2016
    Outbreak status Resolved (26/03/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 109646 7103 7103 102543 0
    Affected population Aves de postura comercial
    Outbreak 9 San Martin Temexlucan, San Martin Temexlucan, PUEBLA
    Date of start of the outbreak 25/02/2016
    Outbreak status Resolved (02/03/2016)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 313 3 0 313
    Affected population Aves de traspatio
    Outbreak 10 Acatic, Acatic, JALISCO
    Date of start of the outbreak 03/03/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 210516 0 0 0
    Affected population Aves de postura comercial
    Outbreak 11 Tlahuapan, Tlahuapan, PUEBLA
    Date of start of the outbreak 07/03/2016
    Outbreak status Resolved (25/03/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 818 565 253 0 0
    Affected population Aves de postura comercial
    Outbreak 12 Zapopan, Zapopan, JALISCO
    Date of start of the outbreak 08/03/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 40000 30 0 0 0
    Affected population Aves de postura comercial
    Outbreak 13 Zapopan, Zapopan, JALISCO
    Date of start of the outbreak 08/03/2016
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 38000 30 0 0 0
    Affected population Aves de postura comercial
    Outbreak 14 Tehuac?n, Tehuac?n, PUEBLA
    Date of start of the outbreak 09/03/2016
    Outbreak status Resolved (19/03/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Indian Peafowl:Pavo cristatus(Phasianidae) 25 25 25 0 0
    Affected population Aves silvestres en cautiverio
    Outbreak 15 Tepanco de L?pez, Tepanco de L?pez, PUEBLA
    Date of start of the outbreak 11/03/2016
    Outbreak status Resolved (14/03/2016)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 23 0 23 0
    Affected population Aves de traspatio
    Outbreak 16 San Antonio Ca?ada, San Antonio Ca?ada, PUEBLA
    Date of start of the outbreak 18/03/2016
    Outbreak status Resolved (21/03/2016)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 210 5 5 205 0
    Affected population Aves de traspatio
    Outbreak 17 Acultzingo, Acultzingo, VERACRUZ
    Date of start of the outbreak 23/03/2016
    Outbreak status Resolved (06/04/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 16000 8000 3000 0 0
    Affected population Aves reproductoras pesadas
    Outbreak 18 Acultzingo, Acultzingo, VERACRUZ
    Date of start of the outbreak 23/03/2016
    Outbreak status Resolved (06/04/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 17200 5000 1000 0 0
    Affected population Aves reproductoras pesadas
    Outbreak 19 Acultzingo, Acultzingo, VERACRUZ
    Date of start of the outbreak 23/03/2016
    Outbreak status Resolved (06/04/2016)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 28900 8000 3000 0 0
    Affected population Aves reproductoras pesadas
    Summary of outbreaks Total outbreaks: 19
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 2725126 28811 ** 14361 145201 0
    Indian Peafowl:Pavo cristatus(Phasianidae) 25 25 25 0 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** 0.53% ** **
    Indian Peafowl:Pavo cristatus(Phasianidae) 100.00% 100.00% 100.00% 100.00%
    *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 intravenous pathogenicity index (IVPI) test carried upon the five production units suspected of infection (four of commercial layers and a layers farm), within the municipality of Encarnaci?n de D?az, Jalisco, gave following results: 2.76 for three of them, and 2.84 for two of them. A farm of commercial breeding poultry, which had already been depopulated, showed an IVPI of 3, within the municipality of Jocotepec. Two other positive farms were identified in Zapopan and another one in Acatic. Active surveillance measures in the perifocal area within the state of Puebla identified four infected farms and three infected backyards. Poultry from the Tepanco de L?pez farm did not present any clinical signs but registered an IVPI of 2.87, which led to a whole slaughtering of the animals. Backyard poultry in San Mart?n Temexlucan registered an IVPI of 3 and were all slaughtered. In Tlahuapan, Puebla, a farm was notified with high mortality. In Tehuac?n, Puebla, two positive farms were detected, among which one with captive-reared wild birds. Two infected backyards were identified in San Antonio Ca?ada and Tepanco de L?pez. In each case, a so-called ?definitive quarantine? has been implemented and animal slaughtering is on-going.In the municipality of Acultzingo, Veracruz, the disease virus was isolated within two farms of heavy breeding poultry belonging to the same business, thanks to passive surveillance measures implemented after a rise in mortality rate and the occurrence of clinical signs suggesting the presence of the virus. Moreover, in the same municipality, the virus was isolated in a farm of 28,900 heavy breeding poultry, thanks to passive surveillance measures. The farm buildings were depopulated and appropriate animal health measures were implemented. Epidemiological investigation is on-going in those three states and epidemiological sampling is on-going in the perifocal area.
    Control measures
    Measures applied
    • Movement control inside the country
    • Screening
    • Disinfection / Disinfestation
    • Quarantine
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • Stamping out
    • Official disposal of carcasses, by-products and waste
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds intravenous pathogenicity index (IVPI) test 29/01/2016 Positive
    Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds intravenous pathogenicity index (IVPI) test 29/02/2016 Positive
    Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds virus isolation 26/01/2016 Positive
    Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds virus isolation 15/02/2016 Positive
    Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds virus isolation 09/03/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../

    http://www.oie.int/wahis_2/public/wa...reportid=19995
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