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Malaria was a deadly disease common in the Mississippi Valley. Also, malaria was one of the reasons people emigrated to California. Malaria is caused by female mosquitoes carrying this disesase. It could spread even more if they laid eggs. It is mostly spread in tropical and subtropical regions. These include Africa, Asia, and parts of the Americas. each year, there are at least 350–500 million cases of malaria, killing between one and three million people. Malaria is caused by poverty too. To this day, malaria vaccines have been provided for people to be safe.

(Alicia March 7, 2010)

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