1999年西尼罗病毒(West Nile virus)输入美国,此后5年该病毒传播蔓延到48个州,导致667人死亡。为了提高发现和反应能力,美国疾病预防控制中心(CDC)流行病学和实验室能力开发处(ELC)和全国50个州和芝加哥、休斯顿、洛杉矶、纽约、费城和哥伦比亚特区6个大城市合作支持建立了西尼罗病毒监测和预防体系。2005年,各州和地区流行病学专家理事会(CSTE)开展了流行病学和实验室 In 1999, West Nile virus was imported into the United States. In the following 5 years, the virus spread to 48 states, resulting in 667 deaths. To improve discovery and responsiveness, the CDC’s Epidemiology and Laboratory Capacity Development Agency (ELC) has collaborated with 50 major states across the country and six major cities in Chicago, Houston, Los Angeles, New York, Philadelphia and the District of Columbia Support the establishment of West Nile virus surveillance and prevention system. In 2005, state and regional epidemiological experts’ councils (CSTE) conducted epidemiological and laboratory