MMWR Morb Mortal Wkly Rep. 1999 Oct 8;48(39):890-2.
The outbreak of human arboviral encephalitis attributable to a mosquito-transmitted West Nile-like virus (WNLV) continues to wane in the Northeast. As of October 5, the number of laboratory-positive cases had increased to 50 (27 confirmed and 23 probable), including five deaths. The increase in cases is mainly a result of completed retesting with West Nile virus antigen of specimens previously tested with the related St. Louis encephalitis virus antigen and to intensive retrospective case finding in the ongoing epidemiologic investigations.
由一种类似西尼罗河病毒(WNLV)经蚊子传播所致的人类虫媒病毒性脑炎疫情在东北部地区持续减弱。截至10月5日,实验室确诊病例数增至50例(27例确诊,23例疑似),其中5例死亡。病例数增加主要是因为对之前用相关圣路易斯脑炎病毒抗原检测过的标本重新进行了西尼罗河病毒抗原检测,以及在正在进行的流行病学调查中进行了深入的回顾性病例排查。