van der Merwe L
J S Afr Vet Assoc. 1979 Dec;50(4):323-5.
Observations are reported on 2743 animals immunised against heartwater since 1958. The methods of immunisation and control of reactions are discussed. This procedure is not without risk and 0,83% of the animals died in spite of treatment. Bos indicus breeds appear to have a greater resistance to heartwater and are relatively easy to immunise. Of the Box taurus breeds the South Devon, the Jersey and the Charolais seem to be particularly susceptible. Older animals and pregnant cows are considered to be in the high risk category.
报告了自1958年以来对2743只动物进行牛心水病免疫的观察情况。讨论了免疫方法和反应控制。该程序并非没有风险，尽管进行了治疗，仍有0.83%的动物死亡。瘤牛品种似乎对牛心水病有更强的抵抗力，且相对容易免疫。在欧洲牛品种中，南德文牛、泽西牛和夏洛莱牛似乎特别易感。老龄动物和怀孕母牛被认为属于高风险类别。
