Travel Notices & Disease Outbreaks -- Current Areas of Concern
Outbreak Updates and News Items related to travel health, from the Center for Disease Control (CDC), World Health Organization (WHO), U.S. Department of State, and International Travel Medicine Clinic:

CDC Travel Notices
Travel Health Warnings, Travel Health Precautions, Outbreaks, and News Items related to travel from the Center for Disease Control

WHO Disease Outbreak News
Information from the World Health Organization regarding disease outbreaks

U.S. Department of State Travel Warnings
The U.S. Department of State issues "Travel Warnings" to describe long-term, protracted conditions that make a country dangerous or unstable. A Travel Warning is also issued when the U.S. Government's ability to assist American citizens is constrained due to the closure of an embassy or consulate or because of a drawdown of its staff.

The International Travel Medicine Clinic -- Health Hazards According to Destination
This travel medicine site has country-specific information and warnings, similar to CDC's and WHO's.