According to Google
https://www.google.com/intl/en/landing/stoptb/index.html
March 24 commemorates World Tuberculosis Day, the date in 1882 when Dr Robert Koch discovered the bacterial infection spread through the air.
Each year, more than 9 million people will become sick from TB and 1.7 million will die. Two billion people—one third of the world’s population—are infected with Mycobacterium tuberculosis, the bacteria that cause TB disease. Easily activated when the immune system is compromised, TB is a major killer of people with HIV/AIDS.
That is some scary big numbers. Especially to someone who is on Remicade, which can lower your ability to fight tuberculosis.