OIE: Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Japan

OIE: Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds), Japan
submited by kickingbird at Mar, 12, 2018 9:56 AM from OIE

Information received on 09/03/2018 from Dr Kazuo Ito, Director, International Animal Health Affairs Office, Animal Health Division, Food Safety and Consumer Affairs Bureau, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan

Summary

Report type	Follow-up report No. 4
Date of start of the event	05/11/2017
Date of confirmation of the event	09/11/2017
Report date	09/03/2018
Date submitted to OIE	09/03/2018
Reason for notification	Recurrence of a listed disease
Date of previous occurrence	08/03/2017
Manifestation of disease	Clinical disease
Causal agent	Highly pathogenic influenza A virus
Serotype	H5N6
Nature of diagnosis	Laboratory (basic), Laboratory (advanced)
This event pertains to	a defined zone within the country
Related reports	Immediate notification (10/11/2017) Follow-up report No. 1 (13/11/2017) Follow-up report No. 2 (24/11/2017) Follow-up report No. 3 (22/01/2018) Follow-up report No. 4 (09/03/2018)

New outbreaks (3)

Outbreak 1

Itami city, HYOGO

Date of start of the outbreak

01/03/2018

Outbreak status

Resolved (01/03/2018)

Epidemiological unit

Not applicable

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Large-billed Crow:Corvus macrorhynchos(Corvidae)		5	5	0	0

Outbreak 2

Itami city, HYOGO

Date of start of the outbreak

02/03/2018

Outbreak status

Resolved (02/03/2018)

Epidemiological unit

Not applicable

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Large-billed Crow:Corvus macrorhynchos(Corvidae)		6	6	0	0

Outbreak 3

Itami city, HYOGO

Date of start of the outbreak

03/03/2018

Outbreak status

Resolved (03/03/2018)

Epidemiological unit

Not applicable

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Large-billed Crow:Corvus macrorhynchos(Corvidae)		1	1	0	0

Summary of outbreaks

Total outbreaks: 3

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Large-billed Crow:Corvus macrorhynchos(Corvidae)		12	12	0	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Large-billed Crow:Corvus macrorhynchos(Corvidae)	**	**	100.00%	**

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

**Not calculated because of missing information

Epidemiology

Source of the outbreak(s) or origin of infection	Unknown or inconclusive
Epidemiological comments	Large-billed crows (Corvus macrorhynchos) were found dead or weak in Itami city and tested positive for influenza A virus with rapid tests. Then confirmatory tests were carried out in Tottori University and H5N6 highly pathogenic avian influenza virus was detected in the 12 samples. The area within 10 km around the birds´ collection point was designated as wild bird monitoring priority area.

Control measures

Measures applied	Screening Disinfection Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type	Species	Test	Test date	Result
Tottori University (Private Laboratory)	Large-billed Crow	gene sequencing	06/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	gene sequencing	08/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	haemagglutination (HA) test	06/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	haemagglutination (HA) test	08/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	haemagglutination inhibition test (HIT)	06/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	haemagglutination inhibition test (HIT)	08/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	reverse transcription - polymerase chain reaction (RT-PCR)	06/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	reverse transcription - polymerase chain reaction (RT-PCR)	08/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	virus isolation	06/03/2018	Positive
Tottori University (Private Laboratory)	Large-billed Crow	virus isolation	08/03/2018	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=26116

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