LYCOS RETRIEVER 
Malaria: Mosquitos
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Malaria transmission occurs primarily between dusk and dawn. The risk of malaria depends on the traveler's itinerary, the duration of travel, and the place where the traveler will spend the evenings and nights. Protective measures include remaining in well-screened areas, using mosquito nets, and wearing protective clothes that cover most of the body. Insect repellent should be used on exposed skin. The most effective repellents contain DEET. The effect should last for about 4 hours.
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Malaria transmission occurs primarily between dusk and dawn because of the nocturnal feeding habits of Anopheles mosquitoes. One should therefore take protective measures to reduce contact with mosquitoes, especially during these hours. These measures include remaining in well-screened areas, using mosquito nets, and wearing clothes that cover most of the body.
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Malaria can often be prevented, especially among travelers, by taking proper measures. Prophylactic, or preventative, antimalarial medicines taken before, during and after visiting an endemic area reduce the risk of being infected. Other efforts focus on reducing mosquito bites to prevent transmission. These include covering skin with clothing, using effective insect repellent and sleeping under bed netting.
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Malaria transmission differs in intensity and regularity depending on local factors such as rainfall patterns, proximity of mosquito breeding sites and mosquito species. Some regions have a fairly constant number of cases throughout the year – these are malaria endemic – whereas in other areas there are “malaria” seasons, usually coinciding with the rainy season.
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Malaria can ... be transmitted congenitally (from a mother to her unborn baby) and by blood transfusions. Malaria can be carried by mosquitoes in temperate climates, but the parasite disappears over the winter.
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