This is a response to the buildup of the mucous in the lining of the airways. A child may turn blue, vomit, or become exhausted during a coughing attack. On an average, a child will experience 15 coughing attacks in a 24 hour period. The attacks occur more often at night. Coughing may last as long as 10 weeks.
Recovery is gradual.
Coughing attacks can recur with other respiratory infections for many months thereafter. A child's age and the severity of illness determine the medical care. Older children may be treated at home. Infants need special care and probably will have to be admitted to the hospital. Protection provided by the vaccine tends to wear off and adolescents and adults can acquire the disease if exposed to the germ.