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
Toxin involved in the streptococcal toxic shock syndrome is: 
Select and explain. 
A. Pyrogenic toxin, B. Erythrogenic toxin, C. Hemolysin, D. Neurotoxin
A: Pyrogenic toxin
Answer: A: Pyrogenic toxin 
Explanation: Streptococcal TSS is caused by pyrogenic exotoxin. Ref: Text Book of Microbilogy By Ananthanarayan, 8th Edition, Page 208-209 ; Harrison's Principles of Internal Medicine, 14th Edition, Page 889, 15th Edition, Page 903