The duration of purulent tonsillitis in children with fever is about 1 week, which varies according to the age of the child, the immune function, and the severity of the symptoms of the infection. Septic tonsillitis is usually caused by a bacterial infection, and the white blood cells are usually high, up to 10,000 or more. If the child’s white blood cell count is high, up to 20,000 or more, and if he or she is relatively young and immunocompromised, the duration of the illness may be longer than 1 week. If the child is older, and at the same time, purulent tonsillitis course of acute onset, white blood cell count of more than 10,000, is not very high, fever temperature is not very high, the course of the disease may be relatively shorter, possibly in about 3 days. Be sure to give your child plenty of water and feed them regularly, which is conducive to the healing of purulent tonsillitis.