介水传染病发病率虽然有下降趋势，但病毒性肝炎上升迅猛。
Although incidence rates of water-borne diseases had the drop tendency, virus hepatitis rised rapidly.
多年来人们就注意到贫穷与疾病有关，即在贫穷落后的国家或地区传染病发病率高。
It has, for years, been noticed that poverty is associated with diseases, that is the incidence of infectious diseases is high in poor and underdeveloped countries and regions.
以自治区、县(市)、乡(镇)为单位计划免疫接种率达到85%，传染病发病率显著下降。
The immunization ratio, based on regional, county (city) and township (town) plans, has reached 85%, and the incidence of infectious diseases has been markedly lowered.
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