Diphtheria is an acute and highly contagious disease caused by Corynebacterium diphtheriae that causes inflammation of the mucous membranes and formation of a false membrane in the throat. It is usually spread through direct contact or contact with contaminated articles. Symptoms can range from mild to severe and include fever, sore throat, difficulty breathing and swallowing. Diphtheria is treated with antibiotics like penicillin or erythromycin and a diphtheria antitoxin for severe cases. Vaccination with Quinvaxem is recommended to protect children from the disease.