Malaria affects every country in South America except Uruguay, Chile, and The Falkland Islands. Elevation is a major factor in the areas where malaria is found. The disease is spread from person to person via mosquito bites. People are typically bitten by mosquitoes at dusk and dawn. Symptoms of this disorder are: high fever, chills, sweating, headaches, body aches, weakness, vomiting and diarrhea. If left untreated, new symptoms can occur; people that are infected may experience seizures, delirium and coma. Severe cases may end in death. Malaria can be cured, but the symptoms may not become noticeable until months later. There are three forms of medication that can cure Malaria. An infected person's accessibility to these drugs is dependent upon their access to medical care and their financial situation. Literature about Malaria treatment typically is focused toward people who are tourists. Most sources are not written with the native in mind.