Among the given conditions the least infectious type of TB is seen in which of the following associations?
The most infectious patients have cavitary pulmonary disease or, much less commonly, laryngeal TB and produce sputum containing as many as 105-107 AFB/mL. Persons with both HIV infection and TB are less likely to have cavitations, they may be less infectious than persons without HIV co-infection. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 1342
Cavitary pulmonary disease
Laryngeal TB
Sputum with 1,00,000 AFB/ml
HIV patients with TB