Table 1.

Risk factors of TB reactivation

Risk factor	Relative risk of reactivation
HIV/AIDS	10-100
Close contact	15
Recipient of organ transplant	20-70
Chronic renal failure(hemodyalisis)	6.9-52.5
TNF-α blockers	1.6-25.1
Silicosis	2.8
Fibro-nodular disease on chest x-ray	6–19
Immigrants from endemic countries	2.9-5.3
Work related exposure (Health-care professionals, Prisoners, homeless persons, Substance abuse)	2.55
Diabetes	1.6-7.83
Smokers	2-3
Steroid therapy	2.8-7.7
Low BMI	2-3