In many countries, TB is much more common than in the United States. TB is a serious international public health problem. Although multidrug-resistant (MDR) and extensively drug-resistant (XDR) TB are occurring globally, they are still rare. HIV-infected travelers are at greatest risk if they come in contact with a person with MDR or XDR TB. All travelers should avoid high risk settings where there are no infection control measures in place.
Documented places where transmission has occurred include crowded hospitals, prisons, homeless shelters, and other settings where susceptible persons come in contact with persons with TB disease.
Air travel itself carries a relatively low risk of infection with TB of any kind.
- TB Information for International Travelers (fact sheet)