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

Summary of outbreaks

Total outbreaks: 2

Outbreak Location

• OAXACA ( Santiago Yaitepec )
• PUEBLA ( Tehuacán )

Total animals affected

Outbreak statistics

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

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.

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

Laboratory name and type

Level 3 Biosecurity Laboratory, SENASICA ( National laboratory )

Tests and results

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