Whooping Cough (Pertussis)
Whooping cough - or pertussis - is an infection of the coughing spells that end in a "whooping" sound when the person breathes in. Before a fever
After about 1 to 2 weeks, the dry, irritating cough evolves into coughing spells. During a coughing spell, which can last for more than a minute, the child may turn red or purple. At the end of a spell, the child may make a characteristic whooping sound when breathing in or may vomit. Between spells, the child usually feels well.
Although it's likely that infants and younger children who become infected with B. pertussis will develop the characteristic coughing episodes with their accompanying whoop, not everyone will. However, sometimes infants don't cough or whoop as older children do. They may look as if they're gasping for air with a reddened face and may actually stop breathing for a few seconds during particularly bad spells.
Adults and adolescents with whooping cough may have milder or atypical symptoms, such as a prolonged cough without the coughing spells or the whoop.
Contagiousness
Pertussis is highly contagious. The bacteria spread from person to person through tiny drops of fluid from an infected person's nose or mouth. These may become airborne when the person sneezes, coughs, or laughs. Other people then can become infected by inhaling the drops or getting the drops on their hands and then touching their mouths or noses. Infected people are most contagious during the earliest stages of the illness up to about 2 weeks after the cough begins. Antibiotics shorten the period of contagiousness to 5 days following the start of antibiotic treatment.
Prevention
Whooping cough can be prevented with the pertussis throat mucus samples that will be sent to a Blood tests and a chest X-ray may also be done.
If your child has whooping cough, it will be treated with antibiotics, usually for 2 weeks. Many experts believe that the medication is most effective in shortening the infection when it's given in the first stage of the illness, before coughing spells begin. But even if antibiotics are started later, they're still important because they can stop the spread of the pertussis infection to others. Ask your child's doctor whether preventive antibiotics or vaccine boosters for other family members are needed.
Some children with whooping cough need to be treated in a hospital. Infants and younger children are more likely to be hospitalized because they're at greater risk for complications such as ear infection, seizures. In infants younger than 6 months of age, whooping cough can even be life-threatening.
While in the hospital, a child may need suctioning of thick respiratory secretions. The child's breathing will be monitored, and oxygen may be needed. Intravenous (IV) fluids might be required if the child shows signs of dehydration or has difficulty eating. The child also will be isolated from other patients, with special precautions taken to prevent the infection from spreading to other patients, hospital staff, and visitors.
Home Treatment
If your child is being treated for pertussis at home, follow the schedule for giving antibiotics exactly as your child's doctor prescribed. Giving your child cough medicine probably will not help, as even strong cough medicines usually can't relieve the coughing spells of whooping cough.
During recovery, let your child rest in bed and use a cool-mist vaporizer. This will help loosen respiratory secretions and soothe irritated lungs and breathing passages. (If you use a vaporizer, be sure to follow directions for keeping it clean and mold-free, usually with small amounts of bleach.) In addition, try to keep your home free of irritants that can trigger coughing spells, such as aerosol sprays, tobacco smoke, and smoke from cooking, fireplaces, and wood-burning stoves.
Children with whooping cough may vomit or not eat or drink as much because of frequent coughing. So offer smaller, more frequent meals and encourage your child to drink lots of fluids. Watch for signs of dehydration too, including: thirst, irritability, restlessness, lethargy, sunken eyes, a dry mouth and tongue, dry skin, crying without tears, and fewer trips to the bathroom to urinate (or in infants, fewer wet diapers).
When to Call Your Child's Doctor
Call the doctor if you suspect that your child has whooping cough or has been exposed to someone with whooping cough, even if your child has already received all scheduled pertussis immunizations.
Your child should be examined by a doctor if he or she has prolonged coughing spells, especially if these spells:
- make your child turn red or purple
- are followed by vomiting
- are accompanied by a whooping sound when your child breathes in after coughing
If your child has been diagnosed with whooping cough and is being treated at home, seek immediate medical care if he or she has difficulty breathing or shows signs of dehydration.
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Date reviewed: December 2005