Give an account on maleria
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Malaria is an infectious disease caused by a parasite: it is spread by the bite of an infected mosquito. People catch malaria when the parasite enters the blood. The parasite causes a deadly infection which kills many people each year.
The parasite that causes malaria is a protozoan called 'Plasmodium'. Protozoa are organisms with only one cell, but they are not bacteria. Bacteria are smaller and simpler than protozoans.
People usually get malaria from the Anopheles or Culex mosquitoes: they are the vectors of the disease. The Plasmodium gets into people by the bites of mosquitoes. The Plasmodium is in the mosquito's special saliva.[1] The mosquito's saliva injects an anticoagulant into the person to prevent their blood from clotting. The person is then infected with Plasmodium as a by-product. This makes the person have the disease we call malaria.
Only the female mosquito gives people malaria, because only the female mosquito consumes blood. The male mosquito lives on the nectar of flowers. The female uses blood as a source of protein for its eggs.
Some people do not get malaria from mosquitoes. A baby can get it while inside its mother. This is called maternal-foetal transmission. People can also get malaria from a blood transfusion. This is when someone gives blood to another person. Another way people can catch malaria is by using a needle that someone with the disease used before them.
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