Issel C J, Adams W V
J Am Vet Med Assoc. 1979 Feb 1;174(3):286-8.
In 1975, a survey was conducted in East Baton Rouge Parish, Louisiana, to determine the prevalence of equine infectious anemia. Using the agar gel immunodiffusion test, 94 of 1,398 horses (6.7%) were found to be infected. Infection rates were especially high in areas where clinical cases of equine infectious anemia had been diagnosed. Clinical signs compatible with the disease were noted in 1 of the 94 seropositive horses. The sample set of 1,398 horses represented 22% of the census population obtained during the 1971 Venezuelan equine encephalomyelitis vaccination campaign.
1975年，在路易斯安那州东巴吞鲁日教区进行了一项调查，以确定马传染性贫血的流行情况。采用琼脂凝胶免疫扩散试验，在1398匹马中发现94匹（6.7%）被感染。在已诊断出马传染性贫血临床病例的地区，感染率尤其高。在94匹血清阳性马中，有1匹出现了与该病相符的临床症状。1398匹马的样本集占1971年委内瑞拉马脑炎疫苗接种运动期间获得的普查人口的22%。
