Mycobacterium tuberculosis infection in human is most commonly because of -: (A) Contact, (B) Inhalation, (C) Infiltration, (D) Inoculation
Answer is B. Tuberculosis is transmitted mainly by droplet infection and droplet nuclei generated by sputum positive patients with pulmonary tuberculosis . Ref:PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page :181