OIE: Highly pathogenic avian influenza, China (People´s Rep. of) (Follow-up report No. 4)

OIE: Highly pathogenic avian influenza, China (People´s Rep. of) (Follow-up report No. 4)
submited by kickingbird at Jun, 14, 2017 12:5 PM from OIE

Report type	Follow-up report No. 4
Date of start of the event	19/03/2017
Date of confirmation of the event	24/03/2017
Report date	12/06/2017
Date submitted to OIE	12/06/2017
Reason for notification	New strain of a listed disease
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic avian influenza virus
Serotype	H7N9
Nature of diagnosis	Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to	a defined zone within the country
Related reports	Immediate notification (24/03/2017) Follow-up report No. 1 (12/05/2017) Follow-up report No. 2 (24/05/2017) Follow-up report No. 3 (01/06/2017) Follow-up report No. 4 (12/06/2017) Follow-up report No. 5 (13/06/2017)

New outbreaks (1)

Outbreak 1

Hohhot, Saihan District, INNER MONGOLIA

Date of start of the outbreak

31/05/2017

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	406756	59556	35526	371230	0

Affected population

The outbreak was observed in a local layer farm by local veterinary authority through active surveillance.

Summary of outbreaks

Total outbreaks: 1

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	406756	59556	35526	371230	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	14.64%	8.73%	59.65%	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

Control measures

Measures applied	Movement control inside the country Screening Quarantine Official disposal of carcasses, by-products and waste Stamping out Disinfection Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type	Species	Test	Test date	Result
Harbin National Reference Laboratory for Avian Influenza (OIE Reference Laboratory)	Birds	reverse transcription - polymerase chain reaction (RT-PCR)	08/06/2017	Positive
Harbin National Reference Laboratory for Avian Influenza (OIE Reference Laboratory)	Birds	virus isolation	08/06/2017	Positive

Future Reporting

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

See Also:

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=23996

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