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Avian Influenza Disease Emergency: issue No. 16 (15/06/2004)

Update of the Avian Influenza situation (As of 15/06/2004)








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    Avian Influenza Disease Emergency: issue No. 17 (29/06/2004)
    Update of the Avian Influenza situation (As of 29/06/2004)
    2004
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    Viet Nam: Ongoing surveillance for HPAI included the testing of over 10 000 poultry samples taken from various parts of the country. Results have shown that many were positive for H5 virus (27/06/04 Source: AFP, GPHIN). More information would be required regarding the presence or absence of clinical signs and type of test used for serology, virus isolation and pathological findings. Sound surveillance activities are of utmost importance to determine which areas would be appropriate for restockin g or to institute additional control measures. USA (H7N3): National Veterinary Services Laboratory (NVSL) confirmed that a flock of 14 birds in Hopkins County, Texas, was infected with H7N3 on 22/06/04. The farm is located some seven kilometres from the depopulated commercial operations that tested positive for the H7N3 strain of AI on routine blood tests in mid-May (The AI virus was not isolated in subsequent laboratory tests). This infected non-commercial flock had retested as negat ive over two weeks ago. Commercial or non-commercial flocks in the area are to be retested as part of an ongoing active surveillance programme. (23/06/04 Source: Texas Animal Health Commission NEWS RELEASE; FAO)
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    Avian Influenza Disease Emergency: issue No. 15 (27/05/2004)
    Update of the Avian Influenza situation (As of 27/05/2004)
    2004
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    Thailand: A new case of avian influenza was found in Mae Haeh (Muang district, Chiangmai Province) at a training farm belonging to the Faculty of Agriculture, Chiengmai University on 22/05/04 where 473 chickens died with AI compatible signs. The farm housed various avian species (layer, broiler, duck, goose, ostrich and native chickens). The animals were destroyed based on clinical suspicion. The farm was isolated from the community and no other poultry farms within 5 kilometre radius. (24/05/04 source: FAO; government, gphin) Indonesia: New cases of Avian Influenza were reported from Sleman and Bantul districts (DI Yogyakarta) and North Lampung District (Lampung Province), the total number of infected provinces is 14, comprising 92 districts. (25/05/04, source: OIE website) Russia: Avian Influenza was reported to occur in Altay Region. Verification and validation of the information is ongoing. (12/05/04, source: gphin) Egypt: In Damietta, avian influenza virus (H10N7) was isolated from 5 wild duck samples taken from a market having hunted migratory birds between 18 and 22 April. wo infant cases (fever and cough) were reported in Ismallia in links to the Damietta influenza case by the father of one of them. (23/05/04, source: ProMED)
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    Avian Influenza Disease Emergency: issue No. 33 (01/09/2005)
    Update of the Avian Influenza situation
    2005
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    There is a potential that Highly Pathogenic Avian Influenza (HPAI) subtype H5N1 might be carried along migration routes of wild water birds to densely populated areas in the south Asian subcontinent and along migratory flyways to Europe. Recent outbreaks of HPAI in Russia and Kazakhstan (August, 2005) attest to this fact. Looking at the major bird migration routes (Fig. 1), the HPAI H5N1 virus could possibly spread from Siberia to the Caspian and Black Sea areas in the foreseeable future. Some w ild water birds are nesting in the newly AI affected areas in Novosibirsk and Altai in Russia and will migrate to the above-mentioned areas for winter or stop-over on their way to Africa and Europe. Bird migration routes run across Azerbaijan, Iran, Iraq, Georgia, Ukraine and some Mediterranean countries, where bird flu outbreaks are a possibility. Also India and Bangladesh, which currently seem to be uninfected, are at risk because both areas harbour large numbers of domestic duck and the count ries are situated along one of the major migratory routes. They have the potential to become new large endemic foci of HPAI infection. Additionally, spring migration of 2006 may result in the spread of HPAI H5N1 virus across European Russia, because birds migrating from Europe and European Russia and Siberia have common wintering areas in Southwest Asia.

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