[Evaluation on the effect of implementation regarding the measles surveillance system in Hainan province].

Objective: To evaluate the development and operation on measles surveillance system.

Methods: To formulate surveillance program, and then establish surveillance system on measles in Hainan province before the case surveillance was conducted. Descriptive epidemiological method was used to analyze the measles cases reported through the notifiable diseases epidemic situation report system and measles surveillance system during 2004 - 2008 in Hainan province.

[Epidemiological characteristics and related influencing factors on Japanese encephalitis in Hainan Province].

Objective: To understand the epidemiological characteristics and the influencing factors of Japanese encephalitis (Abbreviated JE) at different periods in Hainan province, and to provide evidence for JE control strategies.

Methods: Data on JE had been collected since 1952 and related incidence, mortality, fatality rates of JE and the rate of JE vaccination were calculated for four periods: the natural epidemic period (1952-1978), period for inactivated JE vaccine promotion (1979-1986), national immunization program period (1987-1990) and the promotion of live-attenuated JE vaccine period (1991-2007). History on the immunity of JE and data from the monitoring programs on cases and insect vectors were also analyzed.