title: Epidemiology and vector efficiency during a dengue fever outbreak in Cixi, Zhejiang Province, China.
abstract: An emigrant worker returning from Southeast Asia triggered the outbreak of a DF epidemic in Zhejiang province, China, in October, 2004. Eighty-three cases, mainly young and middle-aged people between 20 and 50 (78.3%), were reported in the area of Cixi. There were no obvious occupational patterns. The majority of cases were female, with a sex ratio of 1:1.86 (m:f). The dengue virus (DENV) strains from the epidemic area were isolated and identified as DENV-1, which belongs to Asian strain 1. According to the epidemiological investigation, the incidence of DF had no relationship to temperature, humidity, or precipitation, and the Breteau index of larvae showed a clear relationship only with the House Index and Container Index. Recent dengue problems in the town have been associated with the complex social factors and hygienic conditions for endemic villagers and immigrant workers. Some hygienic measures should be taken by the local government to reduce the risk of mosquito-borne disease. These measures should aim to eliminate the breeding sites of the vector Aedes albopictus in indoor and outdoor containers filled with rainwater and thus reducing the risk of DF transmission.
authors.affiliation: Institute of Vector Control, Zhejiang Center for Disease Control and Prevention, 630 Xincheng Road of Binjiang Area, Hangzhou, Zhejiang Province 310051, PR China.
authors.forename: Tianci
authors.initials: T
authors.lastname: Yang
authors.forename: Liang
authors.initials: L
authors.lastname: Lu
authors.forename: Guiming
authors.initials: G
authors.lastname: Fu
authors.forename: Shi
authors.initials: S
authors.lastname: Zhong
authors.forename: Gangqiang
authors.initials: G
authors.lastname: Ding
authors.forename: Rong
authors.initials: R
authors.lastname: Xu
authors.forename: Guangfeng
authors.initials: G
authors.lastname: Zhu
authors.forename: Nanfeng
authors.initials: N
authors.lastname: Shi
authors.forename: Feilong
authors.initials: F
authors.lastname: Fan
authors.forename: Qiyong
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000328:Adult; D000330:Aedes / Q000821:virology*; D000818:Animals; D002681:China; D003715:Dengue / Q000453:epidemiology* / Q000635:transmission / Q000821:virology; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D006813:Humidity; D007303:Insect Vectors / Q000821:virology*; D008297:Male; D008875:Middle Aged; D011891:Rain; D012744:Sex Ratio; D013696:Temperature