Updates to the Online Edition of CDC Health Information for International Travel 2020 (The Yellow Book)

This webpage will contain a listing of permanent changes made to the online text of CDC Health Information for International Travel 2020 since its May 2019 hardcopy release.

Changes will also be indicated within the online sections.

Remember to also check for current recommendations related to outbreaks or emerging situations in Travel Notices that may differ temporarily from recommendations in the Yellow Book.

Content Changes

Updated polio information

September 15, 2020

In the Epidemiology section, information about wild poliovirus circulation was updated for 2020.

Updated Zika diagnosis information

June 09, 2020

Updated the Diagnosis section on the Zika page

Updated hepatitis B vaccine information

November 21, 2019

Updated the Last-Minute Traveler to include information on Heplisav-B

Updated triclabendazole information

October 23, 2019

Updated Fascioliasis to reflect the approval of triclabendazole for treatment.

Updated yellow fever vaccine requirements

August 16, 2019

Updated yellow fever vaccine requirements for Afghanistan, Australia, Bangladesh, Bhutan, Burundi, China, Christmas Island (Australia), Costa Rica, Djibouti, Dominican Republic, Ecuador, including the Galápagos Islands, Equatorial Guinea, Eswatini (Swaziland), Guinea, Honduras, Kiribati, Libya, Maldives, Mauritius, Nauru, Norfolk Island (Australia), Pakistan, Panama, Papua New Guinea, Philippines, Pitcairn Islands (UK), Réunion, Sint Maarten, Solomon Islands, Thailand, Timor-Leste, Trinidad and Tobago, and United Arab Emirates