OIE: Highly pathogenic avian influenza ,Mexico

OIE: Highly pathogenic avian influenza ,Mexico
submited by kickingbird at Apr, 10, 2015 17:48 PM from OIE

Information received on 08/04/2015 from Dr Joaquín Braulio Delgadillo álvarez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA) Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación, Ministerio de Agricultura, Ganadería, Desarrollo rural, Pesca y Alimentación, Mexico, Mexico

Summary

Report type	Immediate notification
Date of start of the event	09/03/2015
Date of confirmation of the event	09/03/2015
Report date	08/04/2015
Date submitted to OIE	09/04/2015
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	09/2014
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N3
Nature of diagnosis	Clinical, Laboratory (basic)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 2

Outbreak Location

OAXACA ( Santiago Yaitepec )
PUEBLA ( Tehuacán )

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	524	139	94	430	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	26.53%	17.94%	67.63%	100.00%

* Removed from the susceptible population through death, destruction and/or slaughter;

Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

Epidemiological comments

Following the notification by the owners of an increase in sudden death in birds at two backyards located in the States of Oaxaca and of Puebla, animals showing clinical signs suggestive of avian influenza were identified in both outbreaks. The official veterinary services launched the necessary epidemiological investigation and the presence of highly pathogenic avian influenza virus subtype H7N3 was confirmed.
Control measures implemented immediately are, among others: quarantine, movement restrictions, stamping out and sampling in the focal and perifocal areas. Both outbreaks were confirmed as positive for avian influenza on 9 March and later by determining the intravenous pathogenicity index. So far, no epidemiological link has been identified between them.

Control measures

Measures applied	Stamping out Quarantine Movement control inside the country Screening Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

Level 3 Biosecurity Laboratory, SENASICA ( National laboratory )

Tests and results

Species	Test	Test date	Result
Birds	virus isolation	09/03/2015	Positive

Future Reporting

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

See Also:

http://www.oie.int

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