Strep throat is an infection of the pharynx. The pharynx is the part of the throat that connects the mouth and voice box. Strep throat is...

Strep throat is an infection of the pharynx. The pharynx is the part of the throat that connects the mouth and voice box. Strep throat is caused by a group of bacteria known as the streptococcal bacteria. If untreated, a strep throat can lead to serious complications, such as rheumatic fever.