人芽囊原虫是否具有致病性一直颇有争议，因为很多流行病学研究和实验动物研究得出了矛盾的结论。
The pathogenic potential of Blastocystis hominis is still controversial because many epidemiologic and experimental animal studies gave quite different conclusions.
目前正在对其它人间和动物病例进行监测，但由于该国缺乏资源以及流行病学和实验室能力而受到阻碍。
Surveillance for additional human and animal cases is presently under way, but is hindered by the country's lack of resources and of epidemiological and laboratory capacities.
应加强对实验动物流行病学的监测。
Enhance the Zoonoses epidemic investigation of laboratory animals.
方法采用健康危险度评价的方法对四氯乙烯进行综合评价：①利用WHO权威文件中的动物实验资料及人类流行病学资料进行危害鉴定；
Methods The methods of health risk assessment were applied. Hazard assessment was carried out with experimental animal data and human epidemiological data from WHO.
流行病学资料及动物实验结果表明，氡及其子体可以引起肺癌及其它疾病。
The epidemiological investigations and the results of animal experiments show that radon and its daughters can cause lung cancer and other diseases.
流行病学资料及动物实验结果表明，氡及其子体可以引起肺癌及其它疾病。
The epidemiological investigations and the results of animal experiments show that radon and its daughters can cause lung cancer and other diseases.
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