Control of a foot-and-mouth disease epidemic in Argentina

被引:39
作者
Perez, AM
Ward, MP
Carpenter, TE
机构
[1] Purdue Univ, Sch Vet Med, Dept Vet Pathobiol, W Lafayette, IN 47907 USA
[2] Univ Calif Davis, Sch Vet Med, Dept Med & Epidemiol, Davis, CA 95616 USA
关键词
foot-and-mouth disease; spatial distribution; reproduction ratio; control; Argentina;
D O I
10.1016/j.prevetmed.2004.08.002
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
A major epidemic of foot-and-mouth disease affected Argentina during 2001. The epidemic was controlled by mass-vaccination of the national herd and movement restrictions. The median herd disease reproduction ratio (RH) decreased significantly from 2.4 (before the epidemic was officially recognized) to 1.2 during the mass-vaccination campaign and <1 following the mass-vaccination campaign. The largest distance between two outbreaks was similar during (1905 km) and after (1890 km) the mass-vaccination. However, after mass-vaccination was completed, the proportion of herd outbreaks clustered decreased front 70.4% to 66.8%, respectively. Although a combination of vaccination and livestock-movement restrictions was effective in controlling the epidemic, 112 herd outbreaks occurred up to 6 months after the end of the mass-vaccination campaign. Mass- vaccination and movement restrictions might be an effective strategy to control FMD; however, the time taken to end large, national epidemics might be >1 year. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:217 / 226
页数:10
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