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Lung Disease & Respiratory Health Center

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Tuberculosis (TB) - Prevention

Active tuberculosis (TB) is very contagious. The World Health Organization (WHO) estimates that one-third of the world's population is infected with the bacteria that cause TB.

To avoid getting an active TB infection:

Recommended Related to Lung Disease/Respiratory Problems

Lung Injuries

A lung injury can occur in many ways. A car accident could cause a harmful blow and a punctured lung. Or lungs can become injured from inhaling harmful chemicals. A lung injury can even occur while being treated in the hospital for an infection or while on a ventilator. If you or someone you love has an injured lung, you may want to understand better how it occurred and what your health care providers are doing to help.

Read the Lung Injuries article > >

  • Do not spend long periods of time in stuffy, enclosed rooms with anyone who has active TB until that person has been treated for at least 2 weeks.
  • Use protective measures, such as face masks, if you work in a facility that cares for people who have untreated TB.
  • If you live with someone who has active TB, help and encourage the person to follow treatment instructions.

Can the TB vaccine help?

A TB vaccine (bacille Calmette-Guerin, or BCG) is used in many countries to prevent TB. But this vaccination is almost never used in the United States because:

  • The risk of getting TB is low in the U.S.
  • The vaccine is not very effective in adults who receive it.
  • The BCG vaccine may cause a tuberculin skin test to indicate a TB infection even if a person is not infected with TB. This complicates the use of the tuberculin skin test to check people for TB.

WebMD Medical Reference from Healthwise

Last Updated: June 04, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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