The following are a few facts about tuberculosis.

Tuberculosis is a bacterial infection.

TB symptoms include a bad cough that lasts three weeks or longer, weight loss and coughing up blood.

TB is spread through the air.

If not treated properly, TB can be deadly.

(Source: Tuberculosis, Medline Plus, www.nlm.nih.gov/medlineplus/tuberculosis.html#cat1)

TB rates in the United States reached an all-time low in 2006.

In 2006, 13,767 TB cases were reported in the United States.

In 2006, the United States had 49 cases of extensively drug-resistant TB.

Of those with TB who got HIV tests, 12.4 percent were HIV-positive.

(Source: "U.S. Tuberculosis Cases at All-Time Low; Drug Resistance Remains a Threat," CDC press release, 3/22/07, www.cdc.gov/od/oc/media/pressrel/2007/r070322.htm)