Highly pathogenic avian influenza, India

Information received on 12/12/2008 from Mr Natarajan Gokulram, Secretary to the Government of India, Department of Animal Husbandry, Dairying and Fisheries, Ministry of Agriculture, New Delhi, India

Summary

New outbreaks

Outbreak 1	Patgaon, Rani, Kamrup, ASSAM
Date of start of the outbreak	28/11/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 18974 682 682 18292 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 2	Katla, Pachim Nalbari, Nalbari, ASSAM
Date of start of the outbreak	30/11/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 16039 75 75 15964 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 3	Jalah, Bezera, Kamrup, ASSAM
Date of start of the outbreak	06/12/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 23173 500 500 22673 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 4	Katajhar, Gobardhana, Barpeta, ASSAM
Date of start of the outbreak	30/11/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 45708 18 18 45690 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 5	Khanapara, Guwahati, Kamrup, ASSAM
Date of start of the outbreak	05/12/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Farm
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 37769 112 112 37657 0
Affected Population	a chick rearing farm
Outbreak 6	Ward No. 6, East Revenue Circle, Dibrugarh, Dibrugarh, ASSAM
Date of start of the outbreak	07/12/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 15628 120 120 15508 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 7	Sarpara, Rampur, Kamrup, ASSAM
Date of start of the outbreak	30/11/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 183614 30 30 183584 0
Affected Population	backyard poultry mainly in a small village.
Outbreak 8	Nilibari, Sidli Chirang, Chirang, ASSAM
Date of start of the outbreak	05/12/2008
Outbreak status	Resolved (22/10/2009)
Epidemiological unit	Village
Affected animals	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 9141 399 399 8742 0
Affected Population	backyard poultry mainly in a small village.
Summary of outbreaks	Total outbreaks: 8
Total animals affected	Species Susceptible Cases Deaths Destroyed Slaughtered Birds 350046 1936 1936 348110 0
Outbreak statistics	Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds 0.55% 0.55% 100.00% 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

Epidemiological investigation is ongoing. Stamping out of all domestic poultry is being applied in an approximately 3-km-radius zone around the outbreaks followed by compensation of the owners. An intensive surveillance campaign has been launched in a 10-km-radius zone including: - closure of poultry markets and prohibition on sale and transportation of poultry products in the infected zone; - disinfection of premises after culling and sealing of premises where appropriate. Restocking will be applied in accordance with a specific protocol.

Control measures

Measures applied	Stamping out Quarantine Movement control inside the country Screening No vaccination No treatment of affected animals
Measures to be applied	Disinfection of infected premises/establishment(s) Dipping / Spraying

Diagnostic test results

Laboratory name and type

High Security Animal Disease Laboratory, Bhopal (National laboratory)

Tests and results

Species Test Test date Result Birds real-time PCR 01/12/2008 Positive Birds real-time PCR 03/12/2008 Positive Birds real-time PCR 09/12/2008 Positive Birds reverse transcription - polymerase chain reaction (RT-PCR) 01/12/2008 Positive Birds reverse transcription - polymerase chain reaction (RT-PCR) 03/12/2008 Positive Birds reverse transcription - polymerase chain reaction (RT-PCR) 09/12/2008 Positive

Future Reporting

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

Map of outbreak locations

Location of current outbreaks

Click on map to zoom in.