His estimate of half a million HIV-positive cases was based on an extrapolation of the known incidence of the virus.
他的50万HIV阳性病例的估计是基于对已知病毒发病率的推断。
It sharply reduces the incidence of traffic accidents.
它大大降低了交通事故的发生率。
Since then, hurricane incidence has dropped off the charts.
从那时起，图表上的数据已经显示了飓风发生率在下降。
Tetracycline in their food probably explains the low incidence of typhus among ancient Nubians.
它们的食物中含有四环素，这可能是古努比亚人斑疹伤寒发病率低的原因。
Moreover, some studies suggest that even moderate drinking may increase the incidence of breast and colon cancer.
此外，一些研究表明，即使是适度饮酒也可能增加乳腺癌和结肠癌的发病率。
The system would greatly reduce the incidence of many infectious diseases that are acquired at the agricultural interface.
该系统将大大减少从农业中感染的许多传染病的发病率。
The incidence of new chronic illness onset increased over time as well, with more husbands than wives developing serious health problems.
新型慢性病发病率也随着时间的推移增加，患病的夫妻当中，男性比女性患上严重健康问题的人数更多。
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。
In Gandania, where the government has a monopoly on tobacco sales, the incidence of smoking-related health problems has risen steadily for the last twenty years.
在政府垄断烟草销售的Gandania，与吸烟有关的健康问题的发生率在过去20年里稳步上升。
In Nunavut's "igloo and email" society, where adults who were born in igloos have children who may never have been out on the land, there's a high incidence of depression.
在努纳维特的“冰屋和电子邮件”社会，在冰屋中出生的人们的孩子可能从未到过陆地上，抑郁症发病率很高。
Contrary to what some have claimed, if people in industrialized societies adopted the San's diet, the incidence of high blood pressure and obesity in these societies might not be dramatically reduced.
与一些人的说法相反，如果工业化社会的人们采用桑氏饮食，这些高血压和肥胖症的社会发病率未必会大幅降低。
Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.
官员们预测，这一增长足以确保因拥挤而造成的延误不会增加。
Research has found that there is a direct correlation between lack of recovery and increased incidence of health and safety problems.
研究发现，精力缺乏恢复与健康、安全问题的增加有直接关系。
The proportion who said it is "sometimes O.K. to spank a child" had fallen to 72%, though most researchers believe the actual incidence of it is higher.
同意“有时候打孩子屁股是可以的”的人占的比例下降到72%，虽然大多数研究者认为，实际上体罚事件发生的更频繁了。
However, some broods possess a few snails of the opposing hand, and in predominantly sinistral broods, the incidence of dextrality is surprisingly high.
然而，一些卵壳中会出现反向螺旋的蜗牛，多数情况下是在左旋卵壳中，右旋的出生率惊人地高。
In this paper, the incidence and prevention of frog eye disease of tobacco were studied.
本文研究了烟草蛙眼病发病规律和防治方法。
The incidence rates of oligoamnios and amniotic fluid muddy 40 weeks after pregnacy were significantly highter.
妊娠40周后羊水过少和羊水过多的发生率明显更高。
The incidence of Tribolium castaneum is increasingly wider and the damage increasingly heavy.
赤拟谷盗的发生范围越来越广、危害越来越严重。
Application of marlex might increase inflammation response, but it will not increase the incidence of infection.
尽管网片的应用可能增大炎性反应，但并不会增加感染的几率。
Watermelon mosaic disease was found in watermelon, Citrullus vulgaris, on Hainan Island, with an incidence of 10-30%.
在海南岛的西瓜中发现了西瓜花叶病，发病率为10-30％。
Tools for assessing the incidence of hib.
评估Hib发病率的工具。
Malaria incidence and mortality rates fall.
疟疾发病率和死亡率下降。
The incidence was higher during rainy seasons.
登革热发病率在雨季较高。
Tuberculosis (TB) incidence is much higher in big cities.
大城市结核病发病率高得多。
The rising incidence of allergies is nothing to sneeze at.
过敏的发病率逐步攀升，不容忽视。
Worldwide, the incidence of melanoma varies more than 150-fold.
全世界黑素瘤发病率的差异超过150倍。
It is estimated that the global TB incidence rate peaked in 2004.
据估计，全球结核病发病率在2004年达到最高峰值。
There is little seasonal variation in the incidence of the disease.
在该病的发病率方面存在着极小的季节性差别。
Global incidence of dengue has grown dramatically in recent decades.
近几十年全球登革热发病率大幅度增长。
Global incidence of dengue has grown dramatically in recent decades.
近几十年全球登革热发病率大幅度增长。
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