Review Question - QID 108830

An 8-year-old boy is brought to his pediatrician with a rash as seen in Figure A. He says that the rash is very itchy and bothers him; however, he denies have any other symptoms such as fever or night sweats. He has never had these kinds of symptoms prior to this occurrence. Notably, several of his classmates have had similar symptoms over the course of the last few months. Based on clinical suspicion, a stained smear of the rash is obtained showing the histology in seen in Figure B. Which type of vaccine would most likely have protected this patient from this disease?