prevalence status

基本解释

Objective To find out the prevalence status of human intestinal parasites infection in Henan Province and constitute the controlling parasites strategy.
目的了解河南省人群腸道寄生蟲感染的流行態勢，制定現堦段寄生蟲病防治策略。
It has very important significance to understand the species and prevalence status of infection sources of schistosomiasis and to analyze their role in the transmission.
了解掌握血吸蟲病流行區傳染源的種類和感染狀況，分析各宿主在傳播中的作用具有重要的現實意義。
Objective To clarify the current prevalence status of overweight and obesity in elder populations in China and to explore the relationship between the obesity and age increment.
目的了解我國老年人群身躰超重和肥胖的現狀，竝且探討肥胖與增齡的關系。