Malaria is common in all tropical/hot countries. I am sure I had it a few times growing up in India. My mother knew exactly what to do. It was plenty of quinine pills. Always recovered without any leftover effects. May be there is one left over effect...I still like carbonated quinine water.
You're a better man than I am, Gunga Din. Quinine is bitter! And, the few times I've had to take it, I've lost all sense of proportion in my vision and I've heard orchestras playing. Which is odd, because I live right next to the jungle.