Ishibashi K, Shirakawa H, Uchinuno Y, Ogawa T
Fukuoka Chuo Livestock Hygiene Service Center, Japan.
J Vet Med Sci. 1995 Feb;57(1):1-4. doi: 10.1292/jvms.57.1.
The seroprevalence and seroconversion to Aino virus infection were epidemiologically analyzed in Fukuoka Prefecture, by a cohort study, in 1990. Serum samples (872) were taken from 436 cattle of 128 farms in five different districts at twice sampling with four month-intervals and were tested by a serum neutralizing test with Aino virus. In the first sampling (May-July), 38.3% of sera and 40.6% of farms tested were positive and 33.3% of cattle and 40.6% of farms were sero-converted during the period of September-November in 1990. Significant differences were found in seroprevalence of farms and seroconversion of cattle/farms among five districts; there was, however, a highly significant correlation between seroprevalence and seroconversion of farm. Consequently, five districts of Fukuoka Prefecture were classified into four epidemic areas according to seroprevalence and seroconversion factors of a principal component analysis.
1990年，在福冈县通过队列研究对猪细小病毒感染的血清阳性率和血清转化进行了流行病学分析。从五个不同地区128个农场的436头牛中采集了血清样本（872份），每隔四个月进行两次采样，并通过猪细小病毒血清中和试验进行检测。在第一次采样（5月至7月）时，38.3%的血清和40.6%的检测农场呈阳性，在1990年9月至11月期间，33.3%的牛和40.6%的农场发生了血清转化。五个地区之间农场的血清阳性率以及牛/农场的血清转化存在显著差异；然而，农场的血清阳性率和血清转化之间存在高度显著的相关性。因此，根据主成分分析的血清阳性率和血清转化因素，福冈县的五个地区被划分为四个流行区。
