The In-flight exposure to measles raises several public health concerns. First, no matter how carefully a country approaches the vaccination or disease prevention efforts of its own citizens, the country will always be at risk for disease exposure due to immigration/travel. However, thorough vaccination programs must be implemented in order to protect the "indigenous" population from infection via herd immunity. Second, air travel poses a serious threat to epidemic control globally. Increasingly, individuals can travel around the world within days. Infections can be carried with them and infected individuals can introduce pathogens to new populations rapidly. Third, surveillance is key to disease prevention and control, but once individuals leave the airport they often disappear within the population. At-risk individuals on-board flight EK406 may not realize their risks for contracting and spreading measles.