Volunteer for NIAID-funded clinical studies related to strep
throat on ClinicalTrials.gov. Strep throat is the most common
throat infection caused by bacteria. It is found most often in
children between the ages of 5 and 15, although it can occur in
younger children and adults. Children younger than 3 years old
can get strep infections, but these usually don’t affect the
throat. Strep throat infections usually occur in the late fall,
winter, and early spring. Last Updated August 24, 2012 Last
Reviewed August 24, 2012