Health risks are dynamic and ever-changing, both at home and while traveling abroad. To stay abreast of the most up-to-the-minute health recommendations, the Centers for Disease Control and Prevention's user-friendly Health Information for International Travel (commonly referred to as the "Yellow Book") has been relied on for decades as a trusted reference for travelers and health care professionals alike. Updated biannually by a team of experts within the CDC, this book is the only source for all official government recommendations for international travel. The book's features include clear and easy-to-read disease risk maps, information on where to find health care during travel, specific health information and itineraries for popular tourist destinations, advice for those traveling with infants and children, and a comprehensive catalogue of specific disease symptoms and outcomes. It addresses both the pre-travel and post-travel consult, and provides information for diagnosing based on presented symptoms or by geographic location visited.