This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
BCG, True about it - 
Select and explain. 
A. Killed vaccine, B. Subcutaneously given, C. Given in positive tubercular patients, D. Live vaccine
D: Live vaccine
Answer: D: Live vaccine 
Explanation: Ans. is 'd' i.e., Live vaccine . BCG is the only widely used live bacterial vaccine. . It consists of living bacteria derived from an attenuated bovine strain of tubercle bacilli. . Normal saline is recommended as a diluent for reconstituting the vaccine. . It is given intradermally. . The site of injection should be just above the inseion of the deltoid.