Report type

Immediate notification

Date of start of the event

09/08/2018

Date of confirmation of the event

11/08/2018

Report date

16/08/2018

Date submitted to OIE

16/08/2018

Reason for notification

Recurrence of a listed disease

Date of previous occurrence

13/03/2018

Manifestation of disease

Clinical disease

Causal agent

Highly pathogenic avian influenza virus

Serotype

H5N2

Nature of diagnosis

Clinical, Laboratory (advanced)

This event pertains to

a defined zone within the country

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

• Kostromskaya Oblast ( Harino, Kostromskoy )

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

The virus isolate was identified as H5N2 subtype by PCR and nucleotide sequencing. The comparative analysis of the obtained nucleotide sequences of the H gene and N gene fragments revealed that the isolate belongs to the Asian genetic lineage of highly pathogenic avian influenza (Clade 2.3.4.4.) which spread in the Russian Federation as well as in Asian, European, Middle Eastern and African countries in 2016-2018. The hemagglutinin cleavage site has a –REKRRKRGLF- structure, characterizing the virus as potentially highly virulent.

Measures applied

• Movement control inside the country
• Surveillance within containment and/or protection zone
• Screening
• Quarantine
• Official disposal of carcasses, by-products and waste
• Stamping out
• Control of wildlife reservoirs
• Disinfection
• Vaccination prohibited
• No treatment of affected animals

Measures to be applied

• No other measures

Laboratory name and type

All-Russian Research Institute for Animal Health ( OIE Reference Laboratory )

Tests and results

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