Pinto M R, Filipe A R
Bull World Health Organ. 1973;49(1):31-5.
A yellow fever epidemic broke out in Luanda, Angola, in January 1971 and was halted in less than 3 months by prompt mass vaccination and intensive antimosquito measures. Nine strains of yellow fever virus were isolated from hospitalized cases, but attempts to isolate the virus from Aedes aegypti mosquitos failed. A serological survey for antibodies to arboviruses in 589 sera from unvaccinated persons showed that two arboviruses were circulating in the epidemic area: the yellow fever virus and the Chikungunya virus responsible for an outbreak of dengue-like disease that occurred shortly before the yellow fever epidemic.
1971年1月,安哥拉罗安达爆发黄热病疫情,通过迅速开展大规模疫苗接种和强化灭蚊措施,疫情在不到3个月的时间内得到控制。从住院病例中分离出9株黄热病病毒,但从埃及伊蚊中分离病毒的尝试未成功。对589份未接种疫苗者血清进行的虫媒病毒抗体血清学调查显示,两种虫媒病毒在疫区传播:黄热病病毒和基孔肯雅病毒,后者导致了在黄热病疫情前不久发生的一场登革热样疾病的爆发。