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Published Date: 2019-05-24 12:19:24
Subject: PRO/AH/EDR> Avian influenza (35): Viet Nam (HU) backyard, HPAI H5N1, OIE
Archive Number: 20190524.6485532
AVIAN INFLUENZA (35): VIET NAM (HAU GIANG) BACKYARD, HPAI H5N1, OIE
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A ProMED-mail post
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International Society for Infectious Diseases
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Date: Mon 20 May 2019
Source: OIE, WAHIS (World Animal Health Information System), weekly disease information 2019; 32(21) [edited]
http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=30534


Highly pathogenic avian influenza, Viet Nam
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Information received on [and dated] 20 May 2019 from Dr. Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Viet Nam

Summary
Report type: immediate notification
Date of start of the event: 4 May 2019
Date of confirmation of the event: 13 May 2019
Reason for notification: reoccurrence of a listed disease
Date of previous occurrence: 11 Mar 2019
Manifestation of disease: clinical disease
Causal agent: Highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: laboratory (advanced)
This event pertains a defined zone within the country.

New outbreaks (1)
Summary of outbreaks
Total outbreaks: 1
Outbreak location: Lai Hieu, Lai Hieu, Nga Bay, Hau Giang
Date of start of the outbreak: 4 May 2019
Outbreak status: continuing (or date resolved not provided)
Epidemiological unit: village
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of / Slaughtered
Birds / 1120 / - / - / 1120 / 0

Outbreak statistics [rates apparent, expressed as percentages]
Species / Morbidity rate / Mortality rate / Case fatality rate / Proportion susceptible animals lost*
Birds / ** / ** / ** / **
*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

Control measures
Measures applied: movement control inside the country; vaccination in response to the outbreak(s); surveillance outside containment and/or protection zone; stamping out; disinfection; no treatment of affected animals
Measures to be applied: no other measures

Diagnostic test results
Laboratory name and type / Species / Test / Test date / Result
Regional Animal Health Office (RAHO 7) (regional laboratory) / Birds / Real-time reverse transcriptase-polymerase chain reaction (RRT-PCR) / 13 May 2019 / Positive

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

[The location of the outbreak can be seen on the interactive map included in the OIE report at the source URL above.]

--
Communicated by:
ProMED-mail
<promed@promedmail.org>

[HPAI H5N1 has been circulating in Viet Nam since 2003. In 2018, 2 outbreaks of HPAI H5N1 were reported. In the same period 11 outbreaks of HPAI H5N6 were also identified. For additional details on the outbreaks, see Viet Nam's OIE annual report at https://tinyurl.com/y2b4egce and go to section 3 of this report. - Mod.CRD

HealthMap/ProMED-mail map of Viet Nam: http://healthmap.org/promed/p/65105]

See Also

Avian influenza (14): Viet Nam (QM), HPAI H5N6, poultry, OIE 20190314.6365230
2018
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Avian influenza (88): Viet Nam, HPAI H5N6, poultry, OIE 20180805.5948408
Avian influenza (36): Viet Nam (HP) HPAI H5N6, poultry, OIE 20180226.5652432
2017
----
Avian influenza (134): Viet Nam (BL) backyard, HPAI H5N1, OIE 20170830.5284351
Avian influenza (122): Viet Nam (HM) backyard, HPAI H5N1, OIE 20170713.5170739
Avian influenza (87): Viet Nam, backyard, HPAI H5N1, H5N6, control 20170331.4939832
Avian influenza (74): Viet Nam (CB, HT) backyard, HPAI H5N1, H5N6, spread 20170313.4898451
Avian influenza (54): Viet Nam (BL, QG) backyard, HPAI H5N1, H5N6, OIE 20170220.4852806
2016
----
Avian influenza (76): Viet Nam (CM) backyard, HPAI H5N1, OIE 20161004.4534319
Avian influenza (44): Cambodia (KP) poultry, HPAI H5N1 20160518.4229595
Avian influenza (43): Cambodia (KP) poultry, HPAI H5N1, OIE 20160517.4227842
Avian influenza (22): Viet Nam (TV) poultry, HPAI H5N1, spread, RFI 20160304.4068066
Undiagnosed mortality, poultry - Cambodia: (KT) RFI 20160127.3970770
Avian influenza (06): Viet Nam, poultry, HPAI H5N6, spread 20160115.3940015
2015
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Avian influenza (199): Viet Nam, poultry, (HT) H5N1, (QG) H5N6, spread 20151128.3825777
Avian influenza (196): Viet Nam (CM) poultry, HPAI H5N1, spread, OIE 20151118.3800637
Avian influenza (189): Viet Nam (HT) poultry, H5N1 (LI) HPAI H5N6 20150930.3681714
Avian influenza (119): Viet Nam, HPAI H5N1 & H5N6, spread 20141227.3057877
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