Sore throat (or acute pharyngitis) can be caused by viruses or bacteria (such as group A streptococcus).
If sore throats are due to a virus, these will sometimes be accompanied by other symptoms such as runny nose, cough, or diarrhea.
Sore throats due to group A streptococcus (strep throat) will require testing in the office and antibiotic treatment. This type of infection is rare in children under 3 years old. A child with step throat is contagious for 24 hours after starting antibiotics and should not return to school or daycare within this time period.
Either type of sore throat may benefit from symptomatic care such as hot or cold beverages or saltwater gargles.