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Colorado Whooping Cough Outbreak

By: KKTV- Cedric Moon
By: KKTV- Cedric Moon

Several people across the stae have come down with an extremely infectious disease, whooping cough.

So far, there are 52 cases in Boulder County, at least nine in Larimer County, one case confirmed in each El Paso and Pueblo Counties.

El Paso County health officials are working to curb the disease before it becomes an outbreak.

Pertussis, or whooping cough begins as a continuous cough over one or two days which many people dismiss as a simple cold. Doctor Steven Luebbert says, "It's not unusual for a person to cough for 10 to 15 minutes straight when they get a paroxysm of coughing."

Luebbert says there is a distinct difference between a cold and whooping cough, "after they've been coughing, they have kind of a whoop sound in between sounds and that's where the whoop comes from."

There are 126 confirmed cases of the disease statewide this year. That's compared with 376 cases in all of 2003, and 464 in 2002.

When health officials do identify someone who has whooping cough, they say they will identify and treat anyone in close contact with the person.

Most commonly, the disease hits infants under two months. Just over one percent could die from it. The other groups hardest hit by the cough are preteens and adolescents because their immunity has worn off and they are often in crowded areas, giving the disease the ability to spread rapidly.

Health experts say whooping cough is much easier to prevent than to treat. Doctor James Todd of Children's Hospital in Denver says while the vaccine is safe for young children, who are almost always immunized, in the past it hasn't been safe for teens and adults. But, he says there is a newer version of the vaccine, which may be safer to immunize older people.

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Whooping Cough

What is it?

  • Pertussis, commonly known as "whooping cough," is an infection of the respiratory tract caused by Bordetella pertussis bacteria.

  • A pertussis infection is very contagious and can be quite serious. People become infected with Bordetella pertussis bacteria by inhaling contaminated droplets from an infected person's cough or sneeze.

  • Once inside the airways, pertussis bacteria produce chemical substances (toxins) that interfere with the respiratory tract's normal ability to eliminate germs.

  • Pertussis bacteria also produce chemicals that cause inflammation, damaging the lining of the breathing passages.

  • Although most infants in the United States are now immunized against pertussis, this immunity usually fades as a person enters early adulthood.

  • About 90 percent of nonimmune family members are likely to develop pertussis if they live in the same household as someone who has the illness.

  • Currently, 25 percent of pertussis cases in the United States occur among adolescents and adults (often in nursing homes and on college campuses).

  • In fact, adults and teenagers (who are not usually diagnosed as having pertussis) are now a major source for spreading pertussis to infants and children.

  • Once an unimmunized child has been infected after exposure to a person with pertussis, it usually takes three days to 21 days for symptoms to begin.

Symptoms

  • The first symptoms of pertussis may be similar to those of a common cold, including nasal congestion, runny nose, sneezing, red and watery eyes, mild fever, and a dry cough.

  • After about one week to two weeks, the dry cough becomes a wet cough that brings up thick, stringy mucus. At the same time, coughing begins to occur in long spells that may last for over a minute, sometimes causing a child to turn red from effort or blue from lack of oxygen.

  • At the end of a coughing spell, the child gasps for air with a characteristic "whooping" sound. Infants may not whoop at all or as loudly as older children.

  • Severe coughing spells can lead to vomiting and may make it hard for a child to eat or drink. Severe coughing can also cause petechiae (tiny, red spots caused by ruptures in blood vessels at the skin's surface) in the skin of the upper body, as well as small areas of bleeding in the whites of the eyes.

  • Because adults and adolescents with pertussis may have milder symptoms, they may be thought to simply have "bronchitis."

Treatment

  • Your doctor can confirm pertussis by taking cultures of respiratory fluids for examination in the laboratory. This involves taking a sample of secretions from the nose or throat and identifying the pertussis bacteria in the secretions. Blood tests and a chest X-ray may also be done.

  • Pertussis is treated with antibiotics, usually erythromycin. Some experts believe that treatment is most effective when antibiotics are started early in the course of the illness. Follow your doctor's schedule for giving antibiotic medication.

  • Antibiotics are also very important in stopping the spread of pertussis bacteria from the infected child to other people. Ask your doctor's advice about the need for giving prophylactic (preventive) antibiotics or vaccine boosters to others in your household.

  • Encourage your child to drink water, fruit juice, and clear soups to prevent dehydration.

  • In some cases, a child with pertussis may need treatment in a hospital. Almost all infants with pertussis who are less than six months old receive hospital treatment for their illness, and about 40 percent of older babies with pertussis are also hospitalized.

How long does it last?

  • Pertussis lasts for several weeks or longer. There are usually two weeks of common cold symptoms, followed by two weeks of severe coughing, followed by two weeks of a convalescent period when coughing occurs less often.

  • In some children, the convalescent stage may last for months.

Prevention

  • Pertussis can be prevented by the pertussis vaccine, which is part of the DTaP (diphtheria, tetanus, acellular pertussis) or DTP immunizations.

  • These important immunizations are routinely given in five doses before a child's sixth birthday.

  • The pertussis vaccine has dramatically decreased the number of cases of whooping cough that occur each year and saved countless lives.

Source: www.nlm.nih.gov (National Library of Medicine Web site) contributed to this report.


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