Tick-borne disease — Australia
Breed. British, European, and other _Bos taurus_ cattle breeds are more susceptible to tick fever caused by _Babesia_ organisms than Brahman and _Bos indicus_ breeds. Cross breeds (_B. taurus_ x _B. indicus_) have intermediate susceptibility determined by the percentage of each breed type.
All breeds, including _B. indicus_ breeds, are highly susceptible to disease caused by _Anaplasma marginale_.
Age. There is a strong link between age and resistance. Most outbreaks occur in animals 18 to
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