Exaltation is defined as -: (A) Decreased virulence, (B) Increased virulence, (C) No change, (D) None
Answer is B. The virulence of a strain is not constant and may undergo spontaneous or induced variations. Enhancement of virulence is known as exaltation Ref Ananthanarayan & paniker's Textbook of Microbiology 9th edition pg no 74