One advantage of a live attenuated vaccine is?: (A) It does not produce persistent infections, (B) The viral strain does not reve to virulent forms, (C) It has an unlimited shelf life, (D) It induces a wide spectrum of antibodies
Answer is D. An advantage of live attenuated vaccines is that they induce a wide spectrum of antibodies. Disadvantages include the possible production of persistent infections, reversion to highly virulent strains and a limited shelf life.