跟进：德州调整新世界螺旋蝇疫区 12.A区部分区域解除牲畜与宠物移动限制

德克萨斯州——德州动物卫生委员会（Texas Animal Health Commission, TAHC）10月23日发布新的行政令，调整新世界螺旋蝇（New World screwworm）疫区范围，此举得到美国农业部（USDA）动植物卫生检验局（APHIS）的同意。农业部当天发布的公告说，州与联邦两级专家确认，该疫区的部分区域已达到 APHIS《新世界螺旋蝇应对手册》中规定的疫区解除条件。

本次调整的疫区为「疫区 12.A」（Infested Zone 12.A）。农业部表示，解除或调整疫区，意味着区内特定区域的牲畜与宠物不再受新世界螺旋蝇相关的移动限制；但跨州移动要求与国际出口要求仍然适用，不受本次调整影响。

农业部同时表示，德州仍有多个螺旋蝇疫区维持不变，APHIS 正继续与 TAHC 密切合作，评估后续疫区的解除条件。农业部请德州所有动物饲养者上 TAHC 官网确认疫区的最新位置、移动要求与各疫区的具体规定，更多疫情动态可查 screwworm.gov。公告称，APHIS 与 TAHC 将继续以科学监测、早期发现与快速应对为基础，让符合条件的区域尽快解除限制，保障生产者的正常经营。

新世界螺旋蝇是一种危害牲畜与野生动物的寄生蝇，其幼虫会啃食温血动物的活体组织。本站此前报道：10月21日，农业部确认在德州 Pecos County 一头被猎获的麋鹿身上检出新世界螺旋蝇，为美国野生动物首例；10月20日，农业部宣布继续分阶段重开南部边境口岸、自墨西哥进口牲畜。本次疫区调整为该事件线的最新进展。

来源：GSM·美国

Follow-Up: Texas Modifies New World Screwworm Infested Zone 12.A, Easing Livestock and Pet Movement Rules in Parts of the Zone

TEXAS — The Texas Animal Health Commission (TAHC) has issued a new executive order modifying a New World screwworm (NWS) infested zone, with concurrence from the U.S. Department of Agriculture's Animal and Plant Health Inspection Service (APHIS), USDA announced on October 23. State and federal subject-matter experts confirmed that portions of the area met the requirements for zone release outlined in APHIS's New World Screwworm Response Playbook.

The zone being modified is Infested Zone 12.A. Releasing or modifying an infested zone removes NWS-related movement requirements for livestock and pets within certain areas, USDA said. All interstate movement requirements and international export requirements still apply.

Several infested zones in Texas remain in place, and APHIS continues to work closely with TAHC to evaluate conditions for future zone releases. USDA urged all Texas animal owners to visit the TAHC website for the latest information on zone locations, movement requirements and zone-specific rules, and pointed to screwworm.gov for updates on the response. APHIS and TAHC said they remain committed to supporting continuity of business for producers and will continue applying science-based surveillance, early detection and rapid-response measures so areas are released as soon as criteria are met.

The New World screwworm is a parasitic fly whose larvae feed on the living tissue of warm-blooded animals, threatening livestock and wildlife. GSM previously reported that USDA on October 21 confirmed the first detection of New World screwworm in U.S. wildlife, in a hunter-harvested elk in Pecos County, Texas, and on October 20 announced the continued phased reopening of southern border ports for livestock imports from Mexico. The zone modification is the latest development in that story.

Source: GSM · United States

来源：GSM·美国（原文链接）

图片来源：图：美国农业部自然资源保护局（NRCS）工作人员与农场主查看牧场分区图（资料图）。美国农业部（USDA）公共领域图片，经 Wikimedia Commons 发布。 / An NRCS staffer and a producer review a pasture field map (file photo). U.S. Department of Agriculture, public domain, via Wikimedia Commons.

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