Modifies a noun

• throat: Common Questions 1. How long does treatment for strep throat usually last?

• B: This being the case, it is most unlikely that such a woman's baby would be born with congenital strep B infection.

• infection: Sky Southern Norway: lots of Group B strep infections, not just in newborns.

Noun used with modifier

• B: After a week I recieved a call telling me that no group B strep was present.