<prompt> Toxin involved in the streptococcal toxic shock syndrome isPyrogenic toxinErythrogenic toxinHemolysinNeurotoxin  <response>: Streptococcal toxic shock syndrome is caused by pyrogenic exotoxin. Pyrogenic exotoxin erythrogenic, shock, scarlatinal toxin: the primary effect of the toxin is induction of fever and so it was renamed streptococcal pyrogenic exotoxin SPE. 3 types of SPE are identified- A, B, C. Types A and C are coded by bacteriophage genes while type B gene is chromosomal. SPE is superantigens, T cell mitogens that induce a massive release of inflammatory cytokines, causing fever, shock and tissue damage. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 213 