OIE: Highly pathogenic avian influenza, Myanmar

OIE: Highly pathogenic avian influenza, Myanmar
submited by kickingbird at Oct, 25, 2007 12:21 PM from OIE

Information received on 24/10/2007 from Mr U Maung Maung Nyunt, Director General, Livestock Breeding and Veterinary Department, Ministry of Livestock & Fisheries , RANGOON, Myanmar

Summary

Report type	Immediate notification
Start date	19/10/2007
Date of confirmation of event	19/10/2007
Report date	24/10/2007
Date submitted to OIE	24/10/2007
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	28/07/2007
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H5N1
Nature of diagnosis	Suspicion, Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
Report pertains to	Defined zone within the country

New outbreaks

Outbreak 1 (OIE ref 6519)

Oatsu Quarter, Bago

Date of start of outbreak

19/10/2007

Outbreak status

Continuing (or date resolved not submitted)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	33859	400	400	33459	0

Affected population

32070 quails, 3118 quail eggs, 52 kg of feed, 1242 layer chickens, 147 ducklings and 30500 hatching duck eggs were all destroyed.

Summary of outbreaks

Total outbreaks: 1

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible removed*
Birds	1.18%	1.18%	100.00%	100.00%

* Removed from the susceptible population either through death, destruction or slaughter

Epidemiology

Source of infection

Unknown or inconclusive

Epidemiological comments

Thanatpin is considered as a high risk township by international epidemiologists because it is situated very close to the lake Moeyungyi occupied by wild birds, with a high population of ducks (nearly eight hundred thousands) and with a rapidly increasing number of raised quails. The source of infection is probably transmitted from seropositive ducks, infecting quails or chickens and other fomites.

Control measures

Measures already applied	Disinfection of infected premises/establishment(s) Dipping / Spraying Quarantine Stamping out Vaccination prohibited No treatment of affected animals
Measures to be applied	Control of wildlife reservoirs Zoning

Diagnostic test results

Laboratory name and type

Veterinary Diagnostic Laboratory, Yangon (National laboratory)

Tests and results

Species	Test	Test date	Result
Birds	polymerase chain reaction (PCR)	19/10/2007	Positive
Birds	polymerase chain reaction (PCR)	20/10/2007	Positive
Birds	rapid tests	19/10/2007	Positive
Birds	rapid tests	20/10/2007	Positive

Map of outbreak locations

Location of current outbreaks

See Also:

http://www.oie.int/wahid-prod/public.php?page=single_report&pop=1&reportid=6377

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