An HIV infected individual with TB infection is over 100-fold more likely to develop active disease than an HIV-seronegative patient. Fifty-four percent of TB patients in the United States are foreign born, Human immunodeficiency virus (HIV) is the most important risk factor for active TB, especially among people 25 to 44 years of age.
Globally, 2 billion people are infected and 2 million to 3 million people die from TB each year. Close contacts of TB patients are most likely to become infected. tuberculosis is transmitted from person to person by coughing or sneezing. It can produce silent, latent infection as well as progressive, active disease.
Tuberculosis (TB) is a communicable infectious disease caused by Mycobacterium tuberculosis.
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