<prompt> Host receptor for streptococcus pyogenes is?CD4CD21CD44CD46  <response>: Ans. d CD46Ref: Wintrobes I2thpg 2523CD46 Complement Membrane Cofactor Protein: It is a receptor to a number of pathogens, such as herpes virus 6, M protein of group A streptococci, Neisseria gonorrhoeae, and Escherichia coli. 