Tuberculosis update.

Tuberculosis cases are increasing in the United States, partly because of the emergence of AIDS and the rise in the homeless population. Faster culture methods usually allow identification within two weeks. Research is being done on serologic and recombinant nucleic acid methods of detecting tuberculosis in various body fluids and secretions. A six-month treatment regimen for tuberculosis has proved to be effective, as have shorter courses of prophylactic therapy for tuberculin skin test converters.