TRAVELERS´HEALTH
"The purpose of the CDC Travelers’ Health website is to provide information, based on scientific studies, disease surveillance, and best practices, to assist travelers and their health-care providers in deciding the vaccines, medications, and other measures necessary to prevent illness and injury during international travel."
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ACCESS THE 2012 YELLOW BOOK ONLINE
"The Yellow Book is published every two years by CDC as a reference for those who advise international travelers about health risks. The Yellow Book is written primarily for health professionals, although others will find it useful."