Cambodia - 1 new outbreak of low pathogenic avian influenza H7N3 in free-ranging ducks in village, KG. Thom (OIE, January 27, 2017)

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[TD="width: *, align: left"] Low pathogenic avian influenza (poultry),
Cambodia
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[TD="class: topbigtabletitle27"]Information received on 27/01/2017 from Dr Sen Sovann, OIE Delegate/Deputy Secretary General , Ministry of Agriculture, Forestry and Fisheries , Ministry of Agriculture, Forestry and Fisheries , Phnom Penh, Cambodia[/TD]
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[TD] Summary
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[TD="class: filtrer_th, width: 10%"]Report type[/TD]
[TD="width: 30%"]Immediate notification[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]12/01/2017[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of confirmation of the event[/TD]
[TD="width: 30%"]23/01/2017[/TD]
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[TD="class: filtrer_th, width: 10%"]Report date[/TD]
[TD="width: 30%"]27/01/2017[/TD]
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[TD="class: filtrer_th, width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]27/01/2017[/TD]
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[TD="class: filtrer_th, width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]First occurrence of a listed disease in the country[/TD]
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[TD="class: filtrer_th, width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Low pathogenic avian influenza virus[/TD]
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[TD="class: filtrer_th, width: 10%"]Serotype[/TD]
[TD="width: 30%"]H7N3[/TD]
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[TD="class: filtrer_th, width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Clinical, Laboratory (basic), Laboratory (advanced), Necropsy[/TD]
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[TD="class: filtrer_th, width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]
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[TD] New outbreaks (1)
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[TD="class: filtrer_th ta_left, align: left"]Outbreak 1[/TD]
[TD="class: filtrer_th ta_left"]Trea, Trea, Staung, KG. THOM[/TD]
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[TD="class: filtrer_th ta_left"]Date of start of the outbreak[/TD]
[TD]12/01/2017[/TD]
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[TD="class: filtrer_th ta_left"]Outbreak status[/TD]
[TD]Resolved (25/01/2017)[/TD]
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[TD="class: filtrer_th ta_left"]Epidemiological unit[/TD]
[TD]Village[/TD]
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[TD="class: filtrer_th ta_left"]Affected animals[/TD]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Susceptible[/TD]
[TD="class: filtrer_th ta_center last"]Cases[/TD]
[TD="class: filtrer_th ta_center last"]Deaths[/TD]
[TD="class: filtrer_th ta_center last"]Destroyed[/TD]
[TD="class: filtrer_th ta_center last"]Slaughtered[/TD]
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[TD]Birds[/TD]
[TD="class: ta_right"]4000[/TD]
[TD="class: ta_right"]3700[/TD]
[TD="class: ta_right"]3700[/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]300[/TD]
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[TD="class: filtrer_th ta_left"]Affected population[/TD]
[TD]Free-ranging ducks[/TD]
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[TD="class: filtrer_th ta_left, align: left"]Summary of outbreaks[/TD]
[TD="class: filtrer_th ta_left"]Total outbreaks: 1[/TD]
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[TD="class: filtrer_th ta_left"]Total animals affected[/TD]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Susceptible[/TD]
[TD="class: filtrer_th ta_center last"]Cases[/TD]
[TD="class: filtrer_th ta_center last"]Deaths[/TD]
[TD="class: filtrer_th ta_center last"]Destroyed[/TD]
[TD="class: filtrer_th ta_center last"]Slaughtered[/TD]
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[TD]Birds[/TD]
[TD="class: ta_right"]4000[/TD]
[TD="class: ta_right"]3700[/TD]
[TD="class: ta_right"]3700[/TD]
[TD="class: ta_right"]0[/TD]
[TD="class: ta_right"]300[/TD]
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[TD="class: filtrer_th ta_left"]Outbreak statistics[/TD]
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[TD="class: filtrer_th ta_center last"]Species[/TD]
[TD="class: filtrer_th ta_center last"]Apparent morbidity rate[/TD]
[TD="class: filtrer_th ta_center last"]Apparent mortality rate[/TD]
[TD="class: filtrer_th ta_center last"]Apparent case fatality rate[/TD]
[TD="class: filtrer_th ta_center last"]Proportion susceptible animals lost*[/TD]
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[TD]Birds[/TD]
[TD="class: ta_right"]92.50%[/TD]
[TD="class: ta_right"]92.50%[/TD]
[TD="class: ta_right"]100.00%[/TD]
[TD="class: ta_right"]100.00%[/TD]
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[TD="class: filtrer_th ta_left, colspan: 2"]*Removed from the susceptible population through death, destruction and/or slaughter[/TD]
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[TD] Epidemiology
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[TD="class: filtrer_th ta_left"]Source of the outbreak(s) or origin of infection[/TD]
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• Unknown or inconclusive

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[TD="class: filtrer_th ta_left"]Epidemiological comments[/TD]
[TD]History: - Origin of ducks: purchased from Takeo province - Raised at home until two months old, then sent to the field on 6 January 2017 - A few days later, some ducks were not well and the owner sought assistance from a private company - Vaccination against duck plague was given on 7 January 2017[/TD]
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[TD] Control measures
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[TD="class: filtrer_th ta_left"]Measures applied[/TD]
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• Movement control inside the country
• Disinfection / Disinfestation
• Dipping / Spraying
• Quarantine
• Official disposal of carcasses, by-products and waste
• Vaccination prohibited
• No treatment of affected animals

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[TD="class: filtrer_th ta_left"]Measures to be applied[/TD]
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• No other measures

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[TD] Diagnostic test results
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[TD="class: filtrer_th ta_left"]Laboratory name and type[/TD]
[TD="class: filtrer_th ta_left"]Species[/TD]
[TD="class: filtrer_th ta_left"]Test[/TD]
[TD="class: filtrer_th ta_left"]Test date[/TD]
[TD="class: filtrer_th ta_left last"]Result[/TD]
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[TD="class: filtrer"]National Animal Health and Production Research Institute (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]anatomo-pathological examination[/TD]
[TD="class: filtrer"]15/01/2017[/TD]
[TD="class: filtrer cb-centree last"]Inconclusive[/TD]
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[TD="class: filtrer"]National Animal Health and Production Research Institute (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]real-time PCR[/TD]
[TD="class: filtrer"]15/01/2017[/TD]
[TD="class: filtrer cb-centree last"]Inconclusive[/TD]
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[TD="class: filtrer"]Institute Pasteur in Cambodia (Regional Reference Laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]real-time PCR[/TD]
[TD="class: filtrer"]23/01/2017[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD] Future Reporting
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[TD="class: filtrer"]The event is continuing. Weekly follow-up reports will be submitted.[/TD]
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http://www.oie.int/wahis_2/public/w...?page_refer=MapFullEventReport&reportid=22599

 

[Gert van der Hoek]

Officials investigating two avian flu outbreaks


Thu, 2 February 2017
Yesenia Amaro


The Ministry of Health is testing a suspected human avian flu case following an outbreak in poultry in Svay Rieng province, with experts also investigating a different avian virus – H7N3 – new to Cambodia and discovered in ducks last month in Kampong Thom province, officials said yesterday.

Dr Sen Sovann, deputy secretary-general at the Ministry of Agriculture, Forestry and Fisheries, said a total of 65 domestic chickens, belonging to three households in Bayab village in Svay Chrum district, were found dead on January 25. Animal health officials then had to cull another 224 chickens and destroy 100 eggs to prevent further spread.

Officials on Saturday received results confirming avian flu to be behind the die-off, Sovann said. “Measures were taken . . . to prevent further spreading,” he said. “Culling was done to prevent incidents in humans.”

However, Ly Sovann, spokesman for the Ministry of Health, said yesterday that officials were also conducting a search for active human cases, and that one suspected case was being tested.

The last avian flu case in a human reported in the Kingdom was in 2014. As of last year, Cambodia had reported 42 avian influenza outbreaks among poultry, but just 56 human cases since 2004.

Last May, four human cases were suspected in Kampot following a poultry outbreak, but the results came back negative. A total of 349 chickens, one duck and 37 chicken eggs were culled.

“We will monitor the area and nearby villagers for 30 days,” Sen Sovann said of the Bayab village area. “Ten kilometres are under investigation.”

Meanwhile, Sovann said animal health officials were working with researchers at the Pasteur Institute to determine the cause of an outbreak of H7N3, an avian virus new to Cambodia that emerged in ducks in Kampong Thom last month.

Some 300 ducks were culled to prevent further spread of the virus, which has appeared in other countries, such as Mexico and Canada. “It’s not new in the world, but it’s new in Cambodia,” he said. “It’s a new case. We don’t know if it’s highly pathogenic.”

Sovann said that the ducks had been raised in a very isolated area in Trea village Kampong Thom’s Stoung district, and that the owners were cooperating.

“We will continue to work with the Pasteur Institute to understand the case,” he said. A Pasteur official could not be reached yesterday.