Mengeling W L
Am J Vet Res. 1975 Jun;36(6):821-3.
Serums prepared from blood collected from swine in Arizona, Florida, Georgia, Hawaii, Iowa, Maine, New Hampshire, Oregon, Vermont, and Washington were examined by the hemagglutination-inhibition (HI) test for antibody to hemagglutinating encephalomyelitis virus (HEV). Antibody was detected in serums from swine in each of the states except Maine, New Hampshire, and Vermont. The frequency of antibody ranged from 10.9% (6 of 55) with serums from swine in Oregon, to 98.6% (71 of 72) with serums from sows in Iowa. A total of 1,241 serums (438 from hysterectomy-derived, colostrum-deprived, neonatal pigs and 803 from older swine) were examined by the HI test. Antibody was detected in 578 (72%) of 803 serums from older swine but not from any of the 438 serums from neonatal pigs. The 803 serums from older swine all were examined by the agar gel diffusion (AGD) test, and antibody was detected in 364 (45.3%). Some of the 803 serums (349 from butcher swine in Iowa) were also examined by the serum-neutralization (SN) test. The number and percentage of the 349 serums with detectable antibody by SN, HI and AGD tests were 331 (94.8%), 313 (89.7%) and 181 (51.9%), respectively.
对从亚利桑那州、佛罗里达州、佐治亚州、夏威夷州、爱荷华州、缅因州、新罕布什尔州、俄勒冈州、佛蒙特州和华盛顿州采集的猪血液制备的血清，通过血凝抑制（HI）试验检测抗血凝性脑脊髓炎病毒（HEV）抗体。除缅因州、新罕布什尔州和佛蒙特州外，在其他各州猪的血清中均检测到抗体。抗体频率范围从俄勒冈州猪血清的10.9%（55份中的6份）到爱荷华州母猪血清的98.6%（72份中的71份）。通过HI试验共检测了1241份血清（438份来自子宫切除、初乳缺乏的新生仔猪，803份来自较大的猪）。在803份来自较大猪的血清中有578份（72%）检测到抗体，但在438份新生仔猪血清中均未检测到。对803份来自较大猪的血清全部进行了琼脂凝胶扩散（AGD）试验，其中364份（45.3%）检测到抗体。对803份血清中的一些（349份来自爱荷华州屠宰猪）也进行了血清中和（SN）试验。通过SN、HI和AGD试验检测到抗体的349份血清的数量和百分比分别为331份（94.8%）、313份（89.7%）和181份（51.9%）。
