Epidemic intensity

If the index about 20 % , the epidemic intensity can reach to the 4 degree .

叶部病情指数20%左右，当年病害流行强度可达4级。

Stepwise Discriminant Analysis on Epidemic Intensity of Bacillary Dysentery and Meteorological Factors in Hunan Province from 1987 to 2006

湖南省1987-2006年细菌性痢疾流行强度与气象因素的逐步判别分析

If the disease index of leaf wilt in flowering stage is about 5 % , the epidemic intensity of diseas is of the 1 degree .

小麦扬花期病情指数5%左右，当年病害流行强度1级；

Therefore , the RIP test has its practical significance as well as theoretical value in the location of potential plague foci and the surveillance of epizootic plague and its epidemic intensity .

RIP对于发现潜在的鼠疫疫源地、监测鼠疫动物病及其流行强度等既有理论价值，又具有实践意义。

After the implemetation of EPI , the epidemiological features of measles were as follows : epidemic intensity weakened , the epidemic cycle vanished , epidemic age postponed .

实施计划免疫后，麻疹流行特征表现为：流行强度减弱、流行周期消失、发病年龄后移。

The seed dressing can postpone obviously beginning stage of wheat powdery mildew and reduce epidemic speed and intensity of it on the wheat field . Relative control effect is over 90 % at heading and flowering stages .

种衣剂拌种可明显推迟小麦白粉病的始发期，并减低其在田间的流行速率和强度，抽穗开花期防效仍在90%以上；

[ Methods ] The data of incidence status , the infection status of epidemic focus and inapparent infection were collected , and the epidemic intensity of HFRS in recent years was analyzed .

[方法]收集全省近年HFRS的人群发病情况、疫源地及人群隐性感染情况，并对其流行强度进行分析。