Some digging around in historical records revealed that there was a change in the incidence of water-borne disease at that time, especially dysentery.

一些历史记录显示，当时水源性疾病的发病率发生了变化，尤其是痢疾。

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Objective to analyze the elderly with chronic diseases Venous Indwelling Needle protective film to replace the time and the incidence of complications.

目的分析老年慢性病患者浅静脉留置针保护膜更换时间与并发症的发生率。

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In 2007, an all-time low point for the incidence of meningococcal disease, the CDC estimated that there were 1, 000 cases and 130 deaths nationally, compared with 2, 800 cases and 300 fatalities a decade earlier.

FORBES: Immunizing Bureaucrats Against Complacency

Arrington is convinced that, over time, the use of XP training will help lower the incidence and severity of injury because it creates educated coaches, who in turn develop educated players, which leads to fewer injuries and improved quality of competition.

FORBES: Cam Newton Versus 750,000 Youth Football Players

We know already that there is an unusual incidence of death of cloned animals around the time of birth.

BBC: Head-to-head: Cloning