跟进：新墨西哥州伊达尔戈县小牛确诊新世界螺旋蝇 划定12.4英里疫区

10月23日，新墨西哥州动物卫生官员确认，伊达尔戈县哈奇塔附近一头小牛感染新世界螺旋蝇，州与联邦机构随即扩大监测范围，并在受影响地点周边划定最小半径12.4英里的疫区。疫区内的牲畜在区内或跨区移动前必须接受检查，必要时须先行治疗。州兽医萨曼莎·霍莱克博士表示，每一例确诊都有助于掌握这种寄生蝇可能存在的范围、明确还需要加强监测的区域，养殖户定期检查牲畜、发现可疑伤口及时上报，对在扩散前发现疫情意义重大。州农业部长杰夫·维特提醒，随着天气转凉也不能放松警惕，整个冬季保持高强度监测，才能保护牲畜健康、为来年做好准备。这起病例之前，奥特罗县本周三也确认了一例，显示这种寄生蝇正在新墨西哥州南部蔓延。官方表示，监测与诱蝇工作正在受影响地点周边持续展开，以确认寄生蝇是否已扩散到已确认的感染动物之外，最新动态可通过ScrewwormNM.org查询。

来源：GSM·美国

Follow-up: New Mexico Confirms New World Screwworm in a Hidalgo County Calf on Oct. 23, Setting a 12.4-Mile Infested Zone

On Oct. 23, New Mexico animal health officials confirmed that a calf near Hachita in Hidalgo County was infested with New World screwworm, and state and federal agencies promptly expanded surveillance and established an infested zone with a minimum radius of 12.4 miles around the affected location. Livestock within the zone must be inspected before moving within or out of the zone and must be treated first if necessary. State Veterinarian Dr. Samantha Holeck said each confirmed case helps determine the possible range of this parasitic fly and identify areas where surveillance needs to be strengthened, and that producers regularly inspecting their livestock and promptly reporting suspicious wounds is important to detecting the infestation before it spreads. State Agriculture Secretary Jeff Witte cautioned that vigilance must not ease as the weather turns cooler, and that maintaining intensive surveillance throughout the winter is necessary to protect livestock health and prepare for the coming year. Before this case, Otero County had also confirmed a case this Wednesday, indicating that the parasitic fly is spreading in southern New Mexico. Officials said monitoring and fly-trapping work is continuing around the affected locations to determine whether the fly has spread beyond the confirmed infested animals, and the latest updates are available at ScrewwormNM.org.

Source: GSM News

来源：GSM·美国（原文链接）

图片来源：新墨西哥州街景。图片经 Wikimedia Commons。A street scene in New Mexico. Via Wikimedia Commons.

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