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馬伝染性貧血 ( equine infectious anemia )      お. 動衛研. 病原体 : レトロウイルス科に属する馬伝染性貧血ウイルス (EIAV) は、一本鎖 RNA ウイルスで、レンチウイルス属の仲間である。 抗原変異を起こし易く 、発症抑制には液性免疫より細胞性免疫が強く関与していると考えられている。 感受性動物 : 馬やロバなどの ウマ類 にのみ感染する。 - PowerPoint PPT Presentation

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  • (equine infectious anemia)(EIAV)RNA24401

  • BLV : Bovine leukemia virusHTLV-1 : Human T-lymphotropic virus-1 HTLV-2 : Human T-lymphotropic virus-2HIV (FIV) (SIV) (EIV) (BIV) (EIAV)

  • The EIAV particle with surface projections is analogous to this squeaky dog toy. The proteins on the surface mutate at a high rate and complicate strategies for immunization.

  • DNADNARNA

  • 4010

  • 1978

  • CHAPTER 6SPECIFIC DISEASES OF HORSESReplacement of bone marrow fat with dark red hemopoietic tissue (erythroid hyperplasia) FAO: Manual on meat inspection for developing countries Enlarged grey red liver showing lobular pattern and haemorrhage under the capsule.

  • 2007 1-62007 7-122006 7-122006 1-620066

  • Committee on Sanitary and Phytosanitary Measures - Notification - United States - Horses Type: Notifications Commodity: Live horses, asses, mules and hinnies Country: Iceland; United States of America Cross-Sectoral Issue: Sanitary and Phytosanitary (SPS) Agreement Information Source: WTO Publication Date: Apr 2001 Short Description: (Objective) Animal health APHIS is proposing to amend the regulations regarding the importation of horses to exempt horses imported from Iceland from testing for dourine, glanders, equine piroplasmosis, and equine infectious anemia during the quarantine period. We believe this action is warranted because Iceland has never had a reported case of dourine, glanders, equine piroplasmosis, or equine infectious anemia, and it appears that horses imported from Iceland would pose a negligible risk of introducing those diseases into the United States. This action would relieve certain testing requirements for horses imported from Iceland while continuing to protect against the introduction of communicable diseases of horses into the United International Portal on Food Safety, Animal & Plant Health

  • France GermanyItalyRomaniaUKIrelandChinaMongolia PhilippinesAustraliaCanada USA MexicoPanamaArgentina Brazil BoliviaColombiaCosta RicaCubaDominicaNicaraguaParaguay VenezuelaRussia UzbekistanTurkey200520062007200520062007OIE

  • 15111469251824323062154200710(Percent Positive FY 2007) Hot Zone for EIA (1996)Since 1978, 92 percent of the test-positive samples have originated from horses located in what is referred to as the hot zone.USA APHIS

  • AcuteOne-fifth of a teaspoon (one milliliter) of this horses blood contains enough virus to infect 1 million horses.Chronic CaseOne-fifth of a teaspoon of blood from a chronic case during a feverish episode contains enough virus to infect 10,000 horses.Inapparent CarrierOnly one horse fly out of 6 million is likely to pick up and transmit EIAV from this horse.Different Degrees of InfectiousnessTo prevent transmission, commingle only test-nagative horses after suitable quarantine periods and maintain a separation of 200 yards from horses whose EIA test status is unknown.10.91m

  • 30Equine Infectious Anemia: A Status Report on Its Control, 1996

  • EIA is considered a classic blood-borne infection. People have played an important role in EIAV transmission over the years by using blood-contaminated materials on different horses. Although this mode of transmission was more prevalent before serologic tests to identify EIAV carriers were available, it is wise for owners and veterinarians to apply the same universal precautions that are used to reduce the risk of spreading blood-borne disease agents in humans.

    Controlling the spread of EIAV involves minimizing or eliminating contact of horses with the secretions, excretions, and blood of EIAV-infected horses. This has been effected in most areas of the world by testing and segregating test-positive horses from those that are test-negative. When this separation is done, it is imperative to retest the test-negative band at 30- to 60-day intervals until new cases fail to appear. Once the reservoirs of EIAV are identified, separated, and maintained a safe distance from other horses, the transmission of EIAV is broken. This sounds easy, but until all horses are tested, one must assume that each horse is a potential reservoir of EIAV and take precautions to commingle only with horses whose background is impeccable, i.e., they come from farms where only test-negative horses are found and have never been exposed to test-positive horses or other equids.

  • 2540501

  • 0501001502002503001970197119721973197419751976197719781979198019811982198384921993942000425150200040006000800010000195219541956195819601962196419661968 15019461051952111300 198419932

  • Wikipedia

    19992482343523,53504,36920001792013384,130244,87220011662053534,224134,96120021171873274,03694,67620031361292693,65884,200

    1999200020012002200300001222042000012001

  • 595

    701

    804

    905

    12671557

    1620

    168016881717172511

  • 1973 (M6)1875 (M8)1877 (M10)1880 (M13)1885 (M18)1886 (M19)1893 (M26)1895 (M28)1896 (M29)1899 (M32)1906 (M39)1909 (M42)1929 (S4)1930 (S5)1939 (S14)35OIE1978 (S53)

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