马拉维蓝舌病的流行病学
The epidemiology of bluetongue in Malawi.
作者信息
Haresnape J M, Taylor W P, Lungu S A
机构信息
Central Veterinary Laboratory, Lilongwe, Malawi.
出版信息
Epidemiol Infect. 1988 Jun;100(3):493-9. doi: 10.1017/s0950268800067224.
A 4 year survey was undertaken in 1982-6 to examine the seasonal nature of bluetongue virus activity in Malawi. Bluetongue infection at Bwemba in Lilongwe district and Likasi in Mchinji district, both in the Central Region of Malawi, was detected by examining sera taken from calves at each site, at monthly intervals. The proportion of seronegative calves undergoing seroconversion each month was used as a measure of virus activity. At both sides bluetongue virus activity was found to be most marked during the rainy season, with no activity detected during the dry season from July to September. Thus the pattern of bluetongue infection in Malawi is highly seasonal. Examination of type-specific neutralizing antibody showed that the prevalent serotypes varied from year to year.
1982年至1986年开展了一项为期4年的调查，以研究马拉维蓝舌病毒活动的季节性特征。通过每月定期检测马拉维中部地区利隆圭区布温巴以及姆钦吉区利卡西的小牛血清，检测蓝舌病感染情况。每月血清转化的血清阴性小牛比例用作病毒活动的指标。在两个地点，均发现蓝舌病毒活动在雨季最为显著，而在7月至9月的旱季未检测到病毒活动。因此，马拉维蓝舌病感染模式具有高度季节性。对型特异性中和抗体的检测表明，流行血清型每年都有所不同。
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