Mosquitoes might be tiny creatures, but are responsible for some of the most dreadful diseases, one of them is malaria. Malaria is caused by a parasite that is transmitted through mosquito bites directly or from mother to unborn baby and through blood transfusions. Very widely spread in the Asian and African continents, people travelling here are very cautious of this disease. In areas that are notorious for mosquito infestations, the local people also take preventive measures to ensure mosquito breeding is prevented or at least minimised. Spread of the disease: When a mosquito bites an infected person, it picks up the parasite from the person and when it next bites another person, the infection is also transmitted.