Approximately one-third of the global human population is infected with M. tuberculosis (or M. bovis), with 8 million new cases of TB and 2 million deaths annually. The World Health Organization declared TB a global public health emergency in 1993, focusing on implementation of directly observed therapy (DOT) in most cases.
In the United States, a continuous decline in TB incidence rates was observed until 1985, when rates began to increase again, due to factors including illicit drug use, home-lessness, HIV infection, irregular adherence to drug therapy, and evolution and spread of drug-resistant strains. Since 1992, TB rates in the United States have declined and in 2004, with effective TB-control programs, reached the lowest in recorded history (mean 4.9 cases per 100,000 population) (2). Most of the TB cases in the United States occur in foreign-born immigrants, ethnic minorities, and medically underserved populations. Rates of MDR-TB are variable, with a global median of 1% of all active TB cases, but rates can be as high as 10% to 15% in certain areas of the world. The goal of the National TB Control Program is to achieve less than one case per 100,000 by the year 2010.
Was this article helpful?
Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.