Goodger W J, Carpenter T, Riemann H
J Am Vet Med Assoc. 1979 Jun 15;174(12):1333-6.
On the basis of questionnaire surveys and personal interviews with veterinarians, ranchers, and livestock farm advisors, the seriousness of anaplasmosis in California was determined. In 1976, the economic loss due to anaplasmosis in the study sample of beef cattle was $2,203,150. When inferences were made from the sample population to include the whole population of beef cattle, this loss was estimated to be $5,244,319. These values were in contrast to a farm advisors' estimate of $11 million loss due to anaplasmosis, which was included in a total estimated loss of $300 million due to all livestock diseases of economic importance in California. It appeared that anaplasmosis, although having a substantial economic impact in California, is not as economically devastating as it was once thought to be. It was concluded that private programs currently in use (vaccination and treatment) are sufficient to control anaplasmosis.
通过对兽医、牧场主和家畜农场顾问进行问卷调查和个人访谈，确定了加利福尼亚州无形体病的严重程度。1976年，肉牛研究样本中无形体病造成的经济损失为2,203,150美元。当从样本总体推断至整个肉牛种群时，这一损失估计为5,244,319美元。这些数值与一位农场顾问估计的无形体病造成的1100万美元损失形成对比，该估计包含在加利福尼亚州所有具有经济重要性的家畜疾病造成的总计3亿美元估计损失之中。看来，无形体病虽然在加利福尼亚州具有重大经济影响，但并不像曾经认为的那样在经济上具有毁灭性。得出的结论是，目前使用的私人项目（疫苗接种和治疗）足以控制无形体病。
