卫生部最高长官YorkChow说现在还没有迹象显示该病毒已在人群中扩散，并且声称调查正集中在作为感染源的家畜身上。
Health chief York Chow said there was no sign yet that the virus has been spread between humans and that investigations were focusing on poultry as being the source of the infection.
这意味着陆源污染和人群活动对近岸海区大气的影响。
It means that there was the influence of land pollution and human activity on the nearshore waters.
目的探讨汉族人群中脑源性神经营养因子（BDNF）基因（GT）n二核苷酸重复多态与精神分裂症阴性亚型发病之间的关系。
Objective To explore the relationship between (GT)n dinucleotide repeated polymorphism of the brain-derived neurotrophic factor (BDNF) gene and onset of negative subtype schizophrenia in Chinese.
方法：根据该病病原生物的生物特性，确定重要的传染源，查明其传播途径和易感人群及其不良习惯。
Methods:In accordance with the biological characteristic of the pathogeny, the sources of infection, the routes of transmission, susceptible population and their bad habits were tested.
本发明具有口味好、便于携带、保健的作用，特别是为运动员、体弱多病等有特 殊需求的人群提供优质的营养源的优点。
The present invention has good taste and health care effect, and may be used as the excellent nutrient source for athlete, valetudinarian and other special people.
疟疾防治工作重点人群为农民，以青壮年及老年人为主。针对治疗传染源的抗疟措施执行情况较好。
The peasants, especially middle-aged and old populations, were key crowd of malaria treatment and prevention. Malaria control measures for treating infectious source were well implemented.
本文对戊型肝炎的流行特征、传染源、传播途径、人群易感性的研究进展和存在的问题进行综述。
This article will review the epidemiological progress of he, such as character of distribution, reservoir of infection, route of transmission, population susceptibility and rel...
本文对戊型肝炎的流行特征、传染源、传播途径、人群易感性的研究进展和存在的问题进行综述。
This article will review the epidemiological progress of he, such as character of distribution, reservoir of infection, route of transmission, population susceptibility and rel...
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