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Published Date: 2013-05-25 23:24:25
Subject: PRO/AH/EDR> Foot & mouth disease - China (12): (Tibet) st. A, bovine, OIE
Archive Number: 20130525.1737116

FOOT & MOUTH DISEASE - CHINA (12): (TIBET), SEROTYPE A, BOVINE, OIE
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Date: Fri 24 May 2013
Source: OIE, WAHID weekly disease information 2013; 26 (22) [summarised, edited]
http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=13497


Foot and mouth disease, China (People's Rep. of)
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Information received on 24 May 2013 from Dr Zhang Zhongqui, Director General, China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People's Rep. of)

Summary
Report type: Follow-up report No. 3
Date of start of the event: 12 Apr 2013
Date of pre-confirmation of the event: 22 Apr 2013
Report date: 24 May 2013
Date submitted to OIE: 24 May 2013
Reason for notification: New strain of a listed disease
Manifestation of disease: Clinical disease
Causal agent: Foot and mouth disease virus
Serotype: A
Nature of diagnosis: Suspicion, Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports: Immediate notification (22 Apr 2013)
Follow-up report No. 1 (03 May 2013)
Follow-up report No. 2 (10 May 2013)
Follow-up report No. 3 (24 May 2013)

New outbreaks (1)
Outbreak 1: Yongjiu village, Bayi, Linzhi, Tibet
Date of start of the outbreak: 24 May 2013
Outbreak status: Continuing (or date resolved not provided)
Epidemiological unit: Village
Affected animals
Species / Susceptible / Cases / Deaths / Destroyed / Slaughtered
Cattle / 207 / 51 / 0 / 207 / 0

Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species / Susceptible / Cases / Deaths / Destroyed / Slaughtered
Cattle / 207 / 51 / 0 / 207 / 0

Outbreak statistics
Species / Apparent morbidity rate / Apparent mortality rate / Apparent case fatality rate / Proportion susceptible animals lost*
Cattle / 24.64 percent / 0.00 percent / 0.00 percent / 100.00 percent

*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: Stamping out, Quarantine, Movement control inside the country, Screening, Zoning, Disinfection of infected premises/establishment(s), Dipping/Spraying, No vaccination

No treatment of affected animals

Measures to be applied: No other measures

Diagnostic test results
Laboratory name and type: Lanzhou Veterinary Research Institute (National laboratory) (OIE's Reference Laboratory)

Species / Test / Test date / Result
Cattle / enzyme-linked immunosorbent assay (ELISA) / 24 May 2013 / Positive
Cattle / polymerase chain reaction (PCR) / 24 May 2013 / Positive
Cattle / virus isolation / 24 May 2013 / Positive [See comment]

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[The chronology of the above outbreak is in need of clarification: Could the FMD virus isolation have been completed in the distant reference laboratory on the same day the outbreak reportedly started?

China has reported, since 18 Feb 2013, 10 outbreaks of the "New strain" FMDV serotype A (topotype ASIA, genotype/strain SEA 97) in 4 separate, distant provinces as follows:

Province / starting date / species affected / number of outbreaks / No culled animals per species / current status
1. Guangdong / 18 Feb 2013 / swine / 1 / 948 swine / resolved 27 Mar 2013
2. Qinghai / 15 Mar 2013 / cattle / 2 / 502 cattle, 78 sheep / resolved 7 May 2013
3. Xinjiang / 15 Mar 2013 / cattle / 3 / 406 cattle, 176 sheep / continuing
4. Tibet / 12 Apr 2013 / cattle / 4 (including the one reported in this posting) / 884 cattle, 56 sheep & goats / continuing

The locations of the FMD-A outbreaks in China are available in separate OIE maps for each province; there is no common, county-wide map for all the said outbreaks since China reports the disease situation in each province as a separate entity.

The said virus strain has also been identified in Russia, on China's border (Zabajkal'skij Kray, at the beginning of March 2013). Another penetration, to Kazakhstan, has been recently suspected, but serotyping and genotyping of the virus are pending.

The genotypes of 2 isolates of this strain, from pigs and cattle, are available at
http://www.wrlfmd.org/fmd_genotyping/2013/WRLMEG-2013-00009%20A%20PR%20China%202013.pdf and http://www.wrlfmd.org/fmd_genotyping/2013/WRLMEG-2013-00004%20A%20PR%20China%202013-2.pdf.

For the control of this "New strain," China opted for a stamping-out policy; reportedly, no vaccination is applied. - Mod.AS

A HealthMap/ProMED-mail map can be accessed at: http://healthmap.org/r/3q1P.]

See Also

Foot and mouth disease - Kazakhstan: (EK) OIE, RFI 20130515.1715748
Foot & mouth disease - China (10): (Tibet) st. A, bovine, OIE 20130510.1704885
Foot & mouth disease - China (09): (XJ) st A, bovine, 2nd outbreak 20130507.1697497
Foot & mouth disease - China (08): (Tibet) st A, bovine, 2nd outbreak 20130504.1691400
Foot & mouth disease - China (07): FMDV st A, genotype 20130429.1679986
Foot & mouth disease - China (06): (Tibet) st. A, bovine, OIE 20130423.1665300
Foot & mouth disease - China (05): (XJ) st. A, bovine, OIE 20130417.1653403
Foot & mouth disease - Russia (02): (ZB) st A 20130404.1622342
Foot & mouth disease - China (04): (QH) st A, bov 20130319.1594167
Foot & mouth disease - Russia: (ZB) st A, SE Asia topotype, bov, porc, OIE 20130318.1592575
Foot & mouth disease - China (03): (GD) st O, (XZ) st A, porc, bov, confirmed, OIE 20130302.1567750
Foot & mouth disease - China (02): (GD, XZ) porc, bov, st O, A, susp, RFI 20130228.1564205
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