Gutierrev E, Monath T P, Alava A, Uriguen D, Arzube M, Chamberlain R W
Am J Epidemiol. 1975 Nov;102(5):400-13. doi: 10.1093/oxfordjournals.aje.a112179.
An epizoodemic of Venezuelan equine encephalitis (VEE), subtype I variant B, occurred in Ecuador during the rainy and hot season of 1969. In this paper, a general description of the epidemic is given and virus isolations from humans are reported. A serologic survey was performed in order to determine the extension of the epidemic along the coastal zone of the country. It is not clear whether the higher antibody rate in older people was because they were at greater risk of infection or was the result of an accumulated immunity with time. The latter could be an indication of endemic virus activity, not yet proven for the VEE IB virus variant. Mosquito surveillance and attempted control by aerial spraying were carried out.
1969年雨季和炎热季节期间，厄瓜多尔发生了委内瑞拉马脑炎（VEE）I型B变种的动物流行病。本文对该疫情进行了总体描述，并报告了从人类身上分离出病毒的情况。为了确定该国沿海地区疫情的蔓延范围，开展了一项血清学调查。尚不清楚老年人中较高的抗体率是因为他们感染风险更大，还是随着时间推移累积免疫的结果。后者可能表明存在地方性病毒活动，但VEE IB病毒变种尚未得到证实。进行了蚊虫监测，并尝试通过空中喷洒进行控制。
