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Author:
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Year:
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Issue:
qin zhi yuan ti gan ran de liu xing bing xue
Author(s):
QIAO Weiping
,
JANET Mbradbury'
,
'05638581
,
'
,
'au'
,
'cjfq')
Pages:
45
-
47
Year:
2004
Issue:
2
Journal:
Pigs and Poultry
Keyword:
GetLinkList(KeywordFilter('火鸡支原体:6478
;
鸡毒支原体:5667
;
禽支原体:3752
;
支原体感染:2105
;
流行病学:2044
;
抗菌药:1013
;
生物安全措施:913
;
传播率:780
;
致病性:661
;
传播模式:544')
;
'kw'
;
'CJFQ')
;
Abstract:
流行病学的宗旨是对于决定疾病在一个生物群落中的频率和分布的各种因素之间关系进行研究。这涉及很多方面 ,其中包括疾病或感染的传播以及与动物敏感性有关的各种因素 ,比如房舍、拥挤等等。
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