Malaria, one of the world's biggest killers, is an infectious disease passed on by a mosquito bite. The following separates facts from myths, answers frequently asked questions and helps prevent malaria while travelling. There are many myths surrounding the disease, ranging from “I hardly ever get bitten by mosquitoes so I’m not at risk” to “I am staying in a five star hotel so I’ll be fine”, but the facts are that it only takes one bite from an infected mosquito to contract malaria.