When quizzed about their knowledge in diagnosing tuberculosis and deciding on the best treatment, medical residents in Baltimore and Philadelphia get almost half the answers wrong, according to a survey by TB disease experts at Johns Hopkins and elsewhere.
In the survey, published online Aug. 2 in the British journal BMC Infectious Diseases, 131 medical residents were asked to answer 20 basic questions about the contagious lung disease, recently made the subject of international concern when a traveler was believed to have its most severe form.
According to researchers, the overall median test score for the training physicians, with one-half scoring higher and the other half scoring lower, was just 55 percent.
Results showed that the recent medical school graduates got three-fifths of the answers wrong (with a median score of 40 percent) for recognizing and treating latent TB, the most common form of the infection. In latent TB, a person is infected with the tubercle bacterium but lacks symptoms and is not contagious, yet is still at risk for developing active disease later on.
Just over half of the questions about diagnosing active TB, when an infected person develops TB-related symptoms and is more likely to infect others, were answered correctly (with a median score of 57 percent). Symptoms of active TB include fever, cough, night sweats and weight loss.
According to the U.S. Centers for Disease Control and Prevention, an estimated 10 million to 15 million Americans have latent TB and are at risk of developing active disease.
On two-thirds of the questions about the toxicity of current drug regimens and about the link between TB and HIV infection, physicians gave the right answer (with a median score of 63 percent for both questions.)
Despite the poor results for trainees, people cannot assume that lack of comprehensive knowledge about tuberculosis leads to poor patient care, says
Contact: David March
Johns Hopkins Medical Institutions