消除潜在的边缘无形体感染后对无形体病的抵抗力。
Resistance to anaplasmosis after elimination of latent Anaplasma marginale infections.
作者信息
Richey E J, Brock W E, Kliewer I O, Jones E W
出版信息
Am J Vet Res. 1977 Feb;38(2):169-70.
Ten 30-month-old cattle (group 2) were inoculated with Anaplasma marginale 6 months after the latent A marginale infection was eliminated by oral chlortetracycline therapy. In addition, 4 cattle (group 1) with no record of infection and 4 cattle (group 3) of equivalent age previously vaccinated with a killed antigen were similarly inoculated. Moderate to severe clinical signs of acute anaplasmosis occurred in the group 1 (previously uninfected) cattle, whereas only 1 of the chlortetracycline-treated cattle (group 2) and none of the vaccinated cattle (group 3) had clinical evidence of disease.
10头30月龄的牛（第2组）在通过口服金霉素疗法消除了边缘无形体潜伏感染6个月后，接种了边缘无形体。此外，对4头无感染记录的牛（第1组）和4头先前接种过灭活抗原的同龄牛（第3组）进行了类似接种。第1组（先前未感染）的牛出现了中度至重度急性无形体病的临床症状，而金霉素治疗的牛（第2组）中只有1头发病，接种疫苗的牛（第3组）则无发病迹象。
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