Both the potential of cholera to spread to new areas where there are susceptible populations causing large epidemics , as well as the need to control cholera in new areas of endemicity, such as parts of Africa and the Americas.

霍亂傳播到存在易感人群的新地區(qū)而引起爆發(fā)流行的可能性和存在地方流行性的新地區(qū)如非洲www.自拍偷拍.com、美洲的部分地區(qū)控制霍亂的需要。

Between 5 and 15 percent of the population are affected by these annual epidemics.

每年有5%及15%的人口受到感染噜噜在线。

It is the most vicious epidemics of South Africa.

這是南非最為兇猛的傳染病中国一级无码黄片。

Migration posts difficulties for the control of epidemics, so it is significant that how to solve it.

人口遷移為傳染病的防治增加了困難，如何解決這一問題在現(xiàn)實中尤為重要国产高清在线a视频大全在线。

It is for this reason that widespread epidemics occur that may affect whole continents.

這是因為這個原因免费黄图视频，普遍的流行病發(fā)生，可能會影響到整個大洲a级日韩黄片欧美。

It was a time when polio epidemics broke out in the hot summer months.

這是一個時候青草青草久热精品视频不卡，脊髓灰質炎疫情爆發(fā)，在炎熱的夏季欧美综合性爱。

"There could be epidemics," she said. I am very worried about bird flu.

她說：可能會有流行病综合亚洲伊人午夜网，我非常擔心禽流感。

Two years later, a new report referred to "widespread and serious epidemics."

兩年之后的今天国产爱在线，新報告提到"普遍和嚴重的流行病"亚洲综合色色色。

During their first winter, over half of the settlers died of[1] starvation or epidemics.

在他們的第一個冬天期間，在移居者的一半死了于[1種]饑餓或流行病粉色视频又黄又爽免费。

That means satellite data can be used to predict epidemics without having to collect any flies on the ground.

這就意味著一级片久久，可以用衛(wèi)星數(shù)據(jù)來預測流行病，因而不需要在地面上采集任何的蒼蠅免费的一级毛片。