Photographed in 2011, during a measles outbreak in Sukkur, Sindh, Pakistan, this image depicts a researcher, as he was checking the right arm of a young child, for the presence of a Bacillus Calmette-Guerin (BCG) vaccination scar that would indicate his immunization against tuberculosis.
BCG, or bacille Calmette-Guerin, is a vaccine for tuberculosis (TB) disease. Many foreign-born persons have been BCG-vaccinated. BCG is used in many countries with a high prevalence of TB, to prevent childhood tuberculous meningitis, and miliary disease. However, BCG is not generally recommended for use in the United States because of the low risk of infection with Mycobacterium tuberculosis, the variable effectiveness of the vaccine against adult pulmonary TB, and the vaccine’s potential interference with tuberculin skin test reactivity. The BCG vaccine should be considered only for very select persons who meet specific criteria, and in consultation with a TB expert.
For more on the topics of measles, or the BCG vaccine, see the links below.