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