墨西哥發(fā)生H7N3型高致病性禽流感 6只野鳥死亡

    食品伙伴網(wǎng)訊   據(jù)世界動(dòng)物衛(wèi)生組織（OIE）消息，5月8日墨西哥向OIE發(fā)布緊急報(bào)告稱，4月28日恰帕斯州（Chiapas）野生動(dòng)物發(fā)生一起H7N3亞型高致病性禽流感。有6只小灰頭稚冠雉和2只褐背鶇染病、死亡。

    據(jù)報(bào)道，診斷性質(zhì)為臨床診斷和實(shí)驗(yàn)室檢驗(yàn)。本次感染來(lái)源尚不清楚。

    這是恰帕斯州首次發(fā)生高致病性禽流感（墨西哥境內(nèi)其他地區(qū)史上曾發(fā)生該?。?。已經(jīng)建立了半徑10千米的隔離區(qū)，沒(méi)有發(fā)現(xiàn)商業(yè)養(yǎng)殖禽感染。

    部分原文報(bào)道如下：

    Endemic wild birds were reported having been found dead in a nature reserve called Zapotal; the reserve is in the State of Chiapas, consists of 100 hectares of semi-humid forest, with several species of sapotas, and shows a wide variety of native wildlife of this State. It has about 220 animal species in their natural environments and 154 species living freely in the reserve, of which 62 species of birds. During the initial investigation, three highly pathogenic avian influenza virus of H7N3 subtype were isolated with an intravenous pathogenicity index of 2.91 and 2.99. A 10 km focal and perifocal zone was established and no evidence of infection was found in commercial poultry. Under the national epidemiological surveillance program, a state active epidemiological surveillance program is on-going for 100% of the commercial poultry and, through a statistical sample size, in backyard poultry, based on serological, virological and molecular testing; no evidence of infection was found in commercial poultry or in backyard poultry. The affected species are Ortalis vetula and Turdus grayi. The epidemiological investigation continues.

    原文鏈接：<http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=17686&newlang=en>