Mexico - Outbreaks of Aujeszky’s disease in backyard pigs, Guerrero, Tamaulipas, Nayarit

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[TD="width: *, align: left"]Aujeszky’s disease,
Mexico[/TD]
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[TD]Information received on 15/10/2019 from Dr. Juan Gay Guti?rrez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA), Secretar?a de Agricultura y Desarrollo Rural (SADER), Ciudad de Mexico, Mexico[/TD]
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[TD]Summary

[TD="width: 10%"]Report type[/TD]
[TD="width: 30%"]Immediate notification[/TD]

[TD="width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]27/08/2019[/TD]

[TD="width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]24/09/2019[/TD]

[TD="width: 10%"]Report date[/TD]
[TD="width: 30%"]14/10/2019[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]15/10/2019[/TD]

[TD="width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Recurrence of a listed disease[/TD]

[TD="width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]09/2015[/TD]

[TD="width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Sub-clinical infection[/TD]

[TD="width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Aujeszky's disease virus[/TD]

[TD="width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]

[TD="width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]

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[TD]New outbreaks (5)

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Teloloapan, Guerrero
Date of start of the outbreak	27/08/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 147 4 0 0 0
Affected population	As part of the active epidemiological surveillance, a rural farm with 147 pigs that did not show clinical signs gave positive serological results for Aujeszky's disease.

[TD="align: left"]Outbreak 1[/TD]

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Jaumave, Tamaulipas
Date of start of the outbreak	05/09/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 5 1 0 0 0
Affected population	As part of the active epidemiological surveillance, a backyard with five pigs that did not show clinical signs gave positive serological results for Aujeszky's disease.

[TD="align: left"]Outbreak 2[/TD]

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Mainero, Tamaulipas
Date of start of the outbreak	05/09/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 6 1 0 0 0
Affected population	As part of the active epidemiological surveillance, a backyard with six pigs that did not show clinical signs gave positive serological results for Aujeszky's disease.

[TD="align: left"]Outbreak 3[/TD]

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Mainero, Tamaulipas
Date of start of the outbreak	05/09/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 8 1 0 0 0
Affected population	As part of the active epidemiological surveillance, a backyard with eight pigs that did not show clinical signs gave positive serological results for Aujeszky's disease.

[TD="align: left"]Outbreak 4[/TD]

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Jaumave, Tamaulipas
Date of start of the outbreak	05/09/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 7 1 0 0 0
Affected population	As part of the active epidemiological surveillance, a backyard with sevenpigs that did not show clinical signs gave positive serological results for Aujeszky's disease.

[TD="align: left"]Outbreak 5[/TD]

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Total outbreaks: 5
Total animals affected	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 173 8 0 0 0
Outbreak statistics	Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Swine 4.62% 0.00% 0.00% 0.00%

[TD="align: left"]Summary of outbreaks[/TD]

[TD="colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]

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[TD]Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

As part of the active epidemiological surveillance, the serological presence of Aujeszky's disease was detected in four backyards in Tamaulipas State and in one pig farm in Guerrero State without clinical signs. In all five outbreaks, ELISA and serological neutralization test results were positive. So far, the virus has not been isolated. Producers in the area were advised to immediately inform official veterinarians of the presence of characteristic signs of the disease and to avoid the movement of pigs and the introduction of herds presenting a risk in the area.

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[TD]Control measures

Measures applied	Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Quarantine Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	Official disposal of carcasses, by-products and waste Disinfection Slaughter Ante and post-mortem inspections

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[TD]Diagnostic test results

Laboratory name and type	Species	Test	Test date	Result
SENASICA level 3 Biosafety Laboratory (National laboratory)	Swine	enzyme-linked immunosorbent assay (ELISA)	18/09/2019	Positive
SENASICA level 3 Biosafety Laboratory (National laboratory)	Swine	seroneutralization test (SNT)	24/09/2019	Positive

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[TD]Future Reporting

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

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https://www.oie.int/wahis_2/public/...?page_refer=MapFullEventReport&reportid=32090

 

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[TD="width: *, align: left"]Aujeszky’s disease,
Mexico[/TD]
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[TD]Information received on 14/12/2019 from Dr. Gay Guti?rrez Juan, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA), Secretar?a de Agricultura y Desarrollo Rural (SADER), Ciudad de Mexico, Mexico[/TD]
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[TD]Summary

[TD="width: 10%"]Report type[/TD]
[TD="width: 30%"]Follow-up report No. 3[/TD]

[TD="width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]27/08/2019[/TD]

[TD="width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]24/09/2019[/TD]

[TD="width: 10%"]Report date[/TD]
[TD="width: 30%"]13/12/2019[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]14/12/2019[/TD]

[TD="width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Recurrence of a listed disease[/TD]

[TD="width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]09/2015[/TD]

[TD="width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Sub-clinical infection[/TD]

[TD="width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Aujeszky's disease virus[/TD]

[TD="width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]

[TD="width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]

[TD="width: 10%"]Related reports[/TD]
[TD="width: 30%"] Immediate notification (14/10/2019) Follow-up report No. 1 (23/10/2019) Follow-up report No. 2 (08/11/2019) Follow-up report No. 3 (13/12/2019) [/TD]

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[TD]New outbreaks (6)

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Jaumave, Tamaulipas
Date of start of the outbreak	31/10/2019
Outbreak status	Resolved (27/11/2019)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 6 3 0 6 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of six pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 1[/TD]

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Jaumave, Tamaulipas
Date of start of the outbreak	31/10/2019
Outbreak status	Resolved (27/11/2019)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 3 1 0 3 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of three pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 2[/TD]

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Teloloapan, Guerrero
Date of start of the outbreak	01/11/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 13 5 0 0 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of thirteen pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 3[/TD]

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Teloloapan, Guerrero
Date of start of the outbreak	01/11/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 8 1 0 0 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of eight pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 4[/TD]

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Teloloapan, Guerrero
Date of start of the outbreak	01/11/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 5 1 0 0 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of five pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 5[/TD]

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Teloloapan, Guerrero
Date of start of the outbreak	05/11/2019
Outbreak status	Continuing (or date resolved not provided)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 13 1 0 0 0
Affected population	Derived from epidemiological sampling around the outbreak, a backyard was identified with a population of thirteen pigs with Aujeszky's disease, which did not show clinical signs.

[TD="align: left"]Outbreak 6[/TD]

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Total outbreaks: 6
Total animals affected	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 48 12 0 9 0
Outbreak statistics	Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Swine 25.00% 0.00% 0.00% 18.75%

[TD="align: left"]Summary of outbreaks[/TD]

[TD="colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]

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[TD]Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

Derived from epidemiological sampling around the outbreak, Aujeszky's disease was detected in two backyards in the state of Tamaulipas and in four backyards in the state of Guerrero. In all six outbreaks, seroneutralisation tests resulted positive. None of the pigs showed clinical signs. Producers in the area were advised to immediately notify the official veterinarian of the presence of signs of the disease. It was also recommended to avoid the movement of pigs and the introduction of herds that represent a risk.

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[TD]Control measures

Measures applied	Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Quarantine Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	Official disposal of carcasses, by-products and waste Stamping out Disinfection

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[TD]Future Reporting

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

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https://www.oie.int/wahis_2/public/...?page_refer=MapFullEventReport&reportid=32631

 

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[TD="width: *, align: left"]Aujeszky’s disease,
Mexico[/TD]
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[TD]Information received on 30/01/2020 from Dr. Gay Guti?rrez Juan, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA), Secretar?a de Agricultura y Desarrollo Rural (SADER), Ciudad de Mexico, Mexico[/TD]
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[TD]Summary

[TD="width: 10%"]Report type[/TD]
[TD="width: 30%"]Follow-up report No. 6 (Final report)[/TD]

[TD="width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]27/08/2019[/TD]

[TD="width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]24/09/2019[/TD]

[TD="width: 10%"]Report date[/TD]
[TD="width: 30%"]30/01/2020[/TD]

[TD="width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]30/01/2020[/TD]

[TD="width: 10%"]Date event resolved[/TD]
[TD="width: 30%"]18/01/2020[/TD]

[TD="width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Recurrence of a listed disease[/TD]

[TD="width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]09/2015[/TD]

[TD="width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Sub-clinical infection[/TD]

[TD="width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Aujeszky's disease virus[/TD]

[TD="width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]

[TD="width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]

[TD="width: 10%"]Related reports[/TD]
[TD="width: 30%"] Immediate notification (14/10/2019) Follow-up report No. 1 (23/10/2019) Follow-up report No. 2 (08/11/2019) Follow-up report No. 3 (13/12/2019) Follow-up report No. 4 (18/12/2019) Follow-up report No. 5 (17/01/2020) Follow-up report No. 6 (30/01/2020) [/TD]

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[TD]New outbreaks (6)

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (17/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 11 3 0 11 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 11 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 1[/TD]

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (17/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 5 2 0 5 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 5 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 2[/TD]

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (18/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 9 5 0 9 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 9 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 3[/TD]

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (17/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 12 2 0 12 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 12 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 4[/TD]

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (17/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 10 2 0 10 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 10 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 5[/TD]

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Del Nayar, Nayarit
Date of start of the outbreak	19/12/2019
Outbreak status	Resolved (18/01/2020)
Epidemiological unit	Backyard
Affected animals	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 8 2 0 8 0
Affected population	Following the epidemiological sampling around the outbreak, a backyard was identified with a population of 8 pigs serologically positive to Aujeszky's disease but without clinical signs.

[TD="align: left"]Outbreak 6[/TD]

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Total outbreaks: 6
Total animals affected	Species Susceptible Cases Deaths Killed and disposed of Slaughtered Swine 55 16 0 55 0
Outbreak statistics	Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Swine 29.09% 0.00% 0.00% 100.00%

[TD="align: left"]Summary of outbreaks[/TD]

[TD="colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]

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[TD]Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

Following epidemiological sampling around the outbreaks in the State of Nayarit, pigs with positive serology for Aujeszky's disease were detected in six backyards in the municipality of El Nayar. The pigs identified had no clinical signs. In the 6 outbreaks, serum neutralisation tests were positive and the virus was not isolated. All the pigs with positive serology and their contacts have been killed and no more infected animals or cases of the disease have been detected in the affected municipalities of the States of Tamaulipas, Guerrero and Nayarit. Therefore, in accordance with Article 8.2.4.3a of the Terrestrial Animal Health Code, this event is considered closed.

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[TD]Control measures

Measures applied	Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Quarantine Official disposal of carcasses, by-products and waste Stamping out Disinfection Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	No other measures

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[TD]Future Reporting

The event is resolved. No more reports will be submitted.

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https://www.oie.int/wahis_2/public/...?page_refer=MapFullEventReport&reportid=33083