Report type

Immediate notification

Date of start of the event

24/07/2015

Date of confirmation of the event

10/08/2015

Report date

14/08/2015

Date submitted to OIE

14/08/2015

Reason for notification

First occurrence of a listed disease

Manifestation of disease

Sub-clinical infection

Causal agent

Low pathogenic avian influenza virus

Serotype

H5N2

Nature of diagnosis

Laboratory (advanced)

This event pertains to

a defined zone within the country

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

• SINALOA (El Rosario, El Rosario)

Total animals affected

Outbreak statistics

* Removed from the susceptible population through death, destruction and/or slaughter;
** Not calculated because of missing information;

Source of the outbreak(s) or origin of infection

• Unknown or inconclusive

Epidemiological comments

Following the epidemiological surveillance activities carried out by the Veterinary Services of Mexico, avian influenza subtype H5N2 has been identified ; the intravenous pathogenicity test revealed that it corresponds to a low pathogenic avian influenza virus.
The virus was isolated in a commercial farm of laying hens in the State of Sinaloa. The corresponding epidemiological investigation was initiated, including sampling in 4 industrial poultry farms and in 33 backyard poultry farms located in the 10-km zone around the outbreak, with a total of 720 samples of blood serum and tracheal and cloacal swabs, without detecting evidence of virus circulation. The production unit has been quarantined and a sanitary barrier has been set up. A humanely slaughter of birds programme will be launched even though it is a virus of low pathogenicity.

Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2015).

Measures applied

• Movement control inside the country
• Screening
• Quarantine
• Zoning
• Vaccination prohibited
• No treatment of affected animals

Measures to be applied

• Disinfection / Disinfestation
• Stamping out

Laboratory name and type

Biosafety Level 3 Laboratory of SENASICA (National laboratory)

Tests and results

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