You could be more likely to get TB if:
• A friend, co-worker, or family member has active TB.
• You live in or have traveled to an area where TB is common, like Russia, Africa, Eastern Europe, Asia, Latin America, and the Caribbean.
• You’re part of a group in which TB is more likely to spread, or you work or live with someone who is. This includes homeless people, people who have HIV, people in jail or prison, and people who inject drugs into their veins.
• You work or live in a hospital or nursing home.
• You’re a health care worker for patients at high risk of TB.
• You’re a smoker.
A healthy immune system fights the TB bacteria. But you might not be able to fend off active TB disease if you have:
• HIV or AIDS
• Diabetes
• Severe kidney disease
• Head and neck cancers
• Cancer treatments such as chemotherapy
• Low body weight and poor nutrition
• Medications for organ transplants
• Certain drugs to treat rheumatoid arthritis, Crohn’s disease, and psoriasis
Babies and young children also have higher chances of getting it because their immune systems aren’t fully formed.
Courtesy: WebMD