Where can I get the most up-to-date information on vaccination recommendations for people who travel outside the U.S.?

You can get this information from CDC’s Travel Health website at wwwnc.cdc.gov/travel/. CDC also publishes Health Information for International Travel (a.k.a. the “Yellow Book”) as a reference for those who advise international travelers of health risks. The Yellow Book is written primarily for healthcare providers, although others might find it useful. The contents of the book are available on the CDC Travel Health website. The book can also be ordered in print form. Information on how to order it is on the Yellow Book website at wwwnc.cdc.gov/travel/page/yellowbook-home.