人们怀疑，气候变化是人畜感染一系列疾病的一个原因，尽管这一点尚未得到证实。

Already, climate change is suspected - though not proven - to have been a factor in a string of disease outbreaks afflicting both people and animals.

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观察钉螺孳生面积、活螺平均密度及人畜感染率变化情况，并与对照组（龙湾镇竺场村）比较。

The snail habitat area, mean density of living snails and prevalence of schistosomiasis in human and cattle were compared with those of the control villages.

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这种病毒是一种人畜交叉感染病毒株，引起了全球各地的流行病学家的深切关注。

This virus is a mix of human, pig and bird strains that has epidemiologists around the world deeply concerned.

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