Description of live poultry markets in the United States and factors associated with repeated presence of H5/H7 low-pathogenicity avian influenza virus
Description of live poultry markets in the United States and factors associated with repeated presence of H5/H7 low-pathogenicity avian influenza virus
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DOI：
10.1637/7571-033106r.1
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发表时间：
2007-01-01
期刊：
影响因子：
1.4
通讯作者：
Rodriguez, Judith
中科院分区：
文献类型：
--
作者：
Garber, Lindsey;Voelker, Laurel;Rodriguez, Judith
2005年，国家动物健康监测系统对全美183个活家禽市场进行了一项调查。这项研究的目的是描述美国活禽市场的特点，并确定市场反复出现低致病性禽流感病毒(LPAIV)H5/H7阳性的潜在风险因素。向市场经营者发放了一份问卷，其中包括市场上鸟类和其他动物的类型、生物安全以及清洁和消毒做法等问题。获得了每个市场2004年3月至2005年3月期间的禽流感检测历史。病例被定义为在一年内(不同情况)至少有两个LPAI/H5/H7休息结果呈阳性的市场，而对照被定义为在一年内至少进行了两次检测，但所有结果均为阴性的市场。北部地区(纽约、新泽西、宾夕法尼亚、新英格兰)的市场比南部(佛罗里达、加利福尼亚州、德克萨斯州)的市场更大，更有可能现场宰杀禽类。对禽流感病毒(AIV)的检测在北方地区比在南方地区更频繁。北部地区的市场H5或H7检测呈阳性的占14.6%，南部地区的市场在年内任何时候都没有H5/H7检测呈阳性。与LPAIV H5/H7反复存在相关的因素包括市场被清洁和消毒的次数，每周开放7天，以及对死禽的垃圾处理。
In 2005 the National Animal Health Monitoring System conducted a survey in 183 live poultry markets throughout the United States. The objectives of this study were to describe characteristics of live poultry markets in the United States and to identify potential risk factors for markets to be repeatedly positive for low-pathogenicity avian influenza virus (LPAIV) H5/H7. A questionnaire was administered to market operators that included questions regarding types of birds and other animals in the market, biosecurity, and cleaning and disinfecting practices. A history of testing for avian influenza from March 2004 through March 2005 was obtained for each market. Cases were defined as markets with at least 2 positive LPAI/H5/H7 rest results during the year (separate occasions), and controls were defined as markets that were tested at least twice during the year with all negative results. Markets in the North region (New York, New Jersey, Pennsylvania, New England) were larger than markets in the South (Florida, California, Texas) and were more likely to slaughter birds on-site. Testing for avian influenza virus (AIV) was performed more frequently in the North region than in the South region. Markets in the North region tested positive for H5 or H7 at 14.6% of the testing visits, and no markets in the South region tested positive for H5/H7 at any time during the year. Factors associated with repeated presence of LPAIV H5/H7 included number of times the market was cleaned and disinfected, being open 7 days per week, and trash disposal of dead birds.