Central America and northern South America.These include the tropical and subtropical regions of: The greatest risk factor for developing malaria is to live in or to visit areas where the disease is common. By sharing needles used to inject drugs.If an uninfected mosquito bites you at this point in the cycle, it will become infected with your malaria parasites and can spread them to the other people it bites.īecause the parasites that cause malaria affect red blood cells, people can also catch malaria from exposure to infected blood, including: This is when people typically develop malaria symptoms. When the parasites mature, they leave the liver and infect your red blood cells. Once the parasites enter your body, they travel to your liver - where some types can lie dormant for as long as a year. If this mosquito bites you in the future, it can transmit malaria parasites to you. A mosquito becomes infected by feeding on a person who has malaria. The parasite is transmitted to humans most commonly through mosquito bites. Malaria is caused by a single-celled parasite of the genus plasmodium. When the parasites mature, they leave the liver and infect red blood cells. The malaria parasites enter that person's bloodstream and travel to the liver. Malaria spreads when a mosquito becomes infected with the disease after biting an infected person, and the infected mosquito then bites a noninfected person.
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