Re: Northern Vietnam: Porcine Reproductive & Respiratory Syndrome (PRRS).
Date: 19 Apr 2007
From: Dung Do <
dung.dah@gmail.com>
Source: OIE Disease Information, WAHID Vol. 20 - No. 17 [edited]
<
http://www.oie.int/wahid-prod/public.php?page=weekly_report_index&admin=0>
OIE follow-up report 1; Information received on [19 Apr 2007] from Mr
Bui Quang Anh, Chief Veterinary Officer, Department of Animal Health,
Ministry of Agriculture and Rural Development, Hanoi, Viet Nam
Summary
Report type: Follow-up report No. 1
Start date : 12 Mar 2007
Date of confirmation of event: 26 Mar 2007
Report date: 19 Apr 2007
Date submitted to OIE: 20 Apr 2007
Reason for notification: 1st occurrence of a listed disease
Manifestation of disease: Clinical disease
Causal agent: PRRSV
Nature of diagnosis : Clinical, Laboratory (basic),
Laboratory (advanced), Necropsy
Report pertains to: Entire country
New Outbreaks
---------------
Outbreak 1 Quyet Thang, Phu Yen, Son La Province
Date of start of outbreak: 27 Mar 2007
Outbreak status: Resolved (9 Apr 2007)
Epidemiological unit: Farm
Affected animals:
Species swine
Susceptible 250
Cases 129
Deaths 83
Destroyed 0
Slaughtered 0
Outbreak 2 Dinh Du, Van Lam, Hung Yen Province
Date of start of outbreak: 23 Mar 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Farm
Affected animals
Species Swine
Susceptible 310
Cases 123
Deaths 56
Destroyed 30
Slaughtered 0
Outbreak 3 Xuan Duc, My Hao, Hung Yen Province
Date of start of outbreak 23 Mar 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Village
Affected animals
Species Swine
Susceptible 450
Cases 210
Deaths 91
Destroyed 45
Slaughtered 0
Outbreak 4 Tram Lo, Thuan Thanh, Bac Ninh Province
Date of start of outbreak: 2 Apr 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Village
Affected animals
Species Swine
Susceptible 347
Cases 95
Deaths 31
Destroyed 52
Slaughtered 0
Outbreak 5 Yen My, Lang Giang, Bac Giang
Province
Date of start of outbreak: 19 Apr 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Village
Affected animals
Species Swine
Susceptible 612
Cases 218
Deaths 98
Destroyed 32
Slaughtered 0
Outbreak 6 Quynh Hoi, Quynh Phu, Thai Binh Province
Date of start of outbreak 14 Mar 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Farm
Affected animals
Species Swine
Susceptible 363
Cases 320
Deaths 198
Destroyed 0
Slaughtered 0
Outbreak 7 Lieu Xa, Yen My, Hung Yen Province
Date of start of outbreak: 23 Mar 2007
Outbreak status: Continuing (or date resolved not submitted)
Epidemiological unit: Farm
Affected animals
Species Swine
Susceptible 120
Cases 45
Deaths 23
Destroyed 25
Slaughtered 0
Summary of outbreaks
Total outbreaks: 7
Total animals affected
Species Swine
Susceptible 2452
Cases 1140
Deaths 580
Destroyed 184
Slaughtered 0
Outbreak statistics
Species Swine
Apparent morbidity rate: 46.49 percent
Apparent mortality rate: 23.65 percent
Apparent case fatality rate:
50.88 percent
Proportion susceptible removed*: 31.16 percent
* Removed from the susceptible population either through death,
destruction or slaughter
Epidemiology:
Source of infection - Introduction of new live animals; Legal
movement of animals
Laboratory name and type: National Centre for Veterinary Diagnosis
(National laboratory)
Species Swine
Test: polymerase chain reaction (PCR)
Test date: 26 Mar 2007
Result: Positive
--
Do Huu
Dung, DVM, MPhil.
Epidemiologist
Department of Animal Health
Hanoi, Viet Nam
<
dung.dah@gmail.com>
[ProMED and PRO/MBDS would like to thank Dr. Huu Dung for alerting us
to the OIE report on the PRRS outbreak in Viet Nam.
A good map with affected areas highlighted can be found at the above
given URL link for the WAHID report. - Mod. MPP]
[PRRS is a disease of great importance to the swine industry wherever
it occurs. We are therefore very pleased to see the excellent
communication efforts made by the Vietnamese animal health
authorities. It is important that all concerned with both regional
and global animal health be apprised of its spread. We also
appreciate the clarification of the exact locations where the disease
affected swine.
In case anyone wonders what PRO/MBDS signifies, it is a regional
ProMED-mail list similar to ProMED-PORT (Portuguese), ProMED-ESP
(Spanish) and ProMED-RUS (Russia and Newly Independent States. It has
been championed by Mod. MPP, and we can see the value by the
timeliness of these reports.
Similar efforts throughout the Middle East and regions of Africa
(West, East, South and North) would improve global alertness and
response to emerging diseases in humans, animals and plants. - Mod.PC]
http://tinyurl.com/3bmzj3
Hundreds of pigs have died since last month in northern Vietnam of Porcine Reproductive & Respiratory Syndrome (PRRS). The Central Steering Committee for Bird Flu Control and the Animal Health Department Tuesday held a meeting and announced PRRS, also known as blue ear disease, had infected Hung Yen, Bac Ninh, Bac Giang, and Thai Binh provinces, and Hai Phong and Hanoi cities.