Medical and Health Documents

Tuberculosis is a communicable disease caused by the Mycobacterium tuberculosis complex, which includes Mycobacterium tuberculosis and Mycobacterium africanum, both primarily from humans, and Mycobacterium bovis from cattle.

This book will teach you about tuberculosis.

Sample

Period of Communicability or Infectious Period
Theoretically, as long as viable tubercule bacilli are being discharged in the sputum. Some untreated or inadequately treated patients may be sputum positive intermittently for years. The degree of communicability depends on the number of bacilli discharged, the virulence of the bacilli, adequacy of ventilation, exposure of the bacilli to sun or UV light, and opportunities for their aerosolization by coughing, sneezing, talking or singing, or during high risk medical procedures such as autopsies, intubations or bronchoscopies.

Effective antimicrobial chemotherapy taken as prescribed usually eliminates communicability within a few weeks, but non-infectiousness must be confirmed by bacteriological laboratory examination. Children with primary tuberculosis are generally not infectious.

Epidemiology
Each year, there are 8 million people diagnosed with TB and 2 million deaths worldwide. Approximately one-third of the world’s population is infected with the tubercule bacillus.

In the United States and New Jersey, the peak of the current epidemic was in 1992. From 1986-1992, the number of active TB cases increased from 22,768 to 26,673 (25%) nationally and from 724 to 983 (36%) in New Jersey. Since 1992, however, the number of active TB cases decreased 43.5% nationally to 15,075 cases and 53.8% in New Jersey to 530 cases. Despite these decreases, the number of active TB cases among the foreign born has increased by over 50% nationally and by over 60% in New Jersey from 1992 –2002.

A disproportionate number of people who become sick or infected with TB are the most vulnerable in any society: children, the elderly, the poor, the homeless, racial/ethnic minorities, those with coexisting immunosuppressive health conditions and those abusing alcohol and/or illicit drugs.

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