Please check the Outbreaks section for updates on these and other countries. Food and waterborne diseases are the number one cause of illness in travelers. Travelers' diarrhea can be caused by viruses, bacteria, or parasites, which are found throughout the region and can contaminate food or water. Make sure your food and drinking water are safe.
Malaria is a preventable infection that can be fatal if left untreated.
In Argentina, you are at risk for malaria only in northern rural areas bordering Bolivia and Paraguay. In Chile, the Falkland Islands, and Uruguay, there is no risk for malaria. For additional information on malaria risk and prevention, see Malaria Information for Travelers to Temperate South America . A certificate of yellow fever vaccination is not required for entry into the countries in this region. For detailed information, see Comprehensive Yellow Fever Vaccination Requirements .