CTF is self limiting. But suspect thatTrev is refering to a different entity entirely, endemic to his locale. Sorry, I don't know much about non-U.S. and 3rd world infectious diseases. I will attempt to list some of the tick diseases around the world. In the US, Lyme disease is the big issue with around 10,000 new cases every year.
Most cases occur in the northeast.
In Africa, relapsing fever, Boutonneuse Fever. In addition, some tick species are responsible for fatal paralysis and may cause allergic reactions. Plus there are whole swag of veterinary diseases. Anyway, these ticks do not occur in South Africa. Hope this information has been some help, if anyone has any more questions you can email me direct.