Transmission dynamics of low- and high-pathogenicity A/Chicken/Pennsylvania/83 avian influenza viruses

被引：24
|
作者：
van der Goot, JA [1 ]
Koch, G [1 ]
de Jong, MCM [1 ]
van Boven, M [1 ]
机构：
[1] Inst Anim Sci & Hlth, NL-8200 AB Lelystad, Netherlands
来源：
AVIAN DISEASES | 2003年 / 47卷
关键词：
chicken; avian influenza; transmission; final size;
D O I：
10.1637/0005-2086-47.s3.939
中图分类号：
S85 [动物医学（兽医学）];
学科分类号：
0906 ;
摘要：
High-pathogenicity avian influenza (HPAI) viruses emerged from low-pathogenicity avian influenza (LPAI) viruses in Pennsylvania (1983-84), Mexico (1994-95), and Italy (1999-2000). Here we focus on the question of why the HPAI virus supersedes the LPAI virus, once it has appeared during the epidemic. To study this, we used an experimental model in chickens that enabled us to estimate the reproduction ratio (R-0). Using this model, we determined the R-0 of the A/Chicken/Pennsylvania/21525/83 (LPAI) and of the A/Chicken/ Pennsylvania/ 1370/83 (HPAI). Comparing the R-0 of both viruses, we concluded that the R-0 of the HPAI virus is significantly higher than the R-0 of the LPAI.
引用
收藏
页码：939 / 941
页数：3
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