Pertussis is caused by bacteria that attach themselves to the cilia (little hairs) that line the respiratory tract. These bacteria produce a potent toxin that inflames the respiratory tract and that prevents the cilia from functioning properly.
The disease can be serious or fatal in infants and unimmunized children. It is much milder in teens, adults, and in immunized children - but still can be a real nuisance.
People with pertussis go through four stages:
Incubation. For 5 to 21 days after exposure (usually 7 to 10 days) there are no symptoms at all while the bacteria multiply.
Prodrome. For the next 1 to 2 weeks, pertussis is not unlike a cold. People have runny noses, sneezing, and perhaps a low-grade fever. A mild cough begins that gradually worsens.
Paroxysms. The worst part of the illness lasts from 1 to 6 weeks. Spasms or attacks of coughing may come up to 15 times per day. Sometimes, especially in children, the cough is followed by a "whoop" noise as they breathe in rapidly, attempting to get air. Even so, young infants will often turn blue with the spells from lack of oxygen. The mucus is often thick and sticky. Gagging, choking, and vomiting are common. Sometimes young infants will stop breathing for varying lengths of time. This stage of pertussis is much milder in adults, teens, older children, and immunized children.
Convalescence. As if this disease were not already long enough, the cough continues for another 2 to 4 weeks, but gradually becomes less severe and less frequent. Even after the cough seems finally over, the spasms often recur briefly for the next several months - especially during colds and during exertion.
Current lab tests to detect pertussis are either slow, cumbersome, not readily available, or often fail to pick up the disease.
According to the Centers for Disease Control and Prevention people are considered to have pertussis if they have a cough lasting for at least 14 days (with no other confirmed cause) and any one of the following symptoms (even if they have been immunized): Coughing spasms or fits (coughs comes in clusters), a whooping noise while breathing in, or vomiting caused by the cough.
The case is called confirmed pertussis if there is a positive lab test or if there has been exposure to someone with a positive lab test.
During a pertussis outbreak, anyone who has a cough lasting at least 14 days (with no other known cause) probably has pertussis, even in the absence of other specific symptoms.
Pertussis is treated with an antibiotic (Biaxin, erythromycin, Septra, or Zithromax). The antibiotic doesn't much affect the length of the illness, but is very effective at stopping its spread.
People with pertussis are highly contagious for up to 5 days after starting the antibiotic.
You or your child have been exposed if you spend a total of 5 hours in the same room with someone with the disease (over a week), or if you sit next to someone with pertussis for any length of time, or if you have any contact at all with infected mucus or saliva.
Between 70 and 100 percent of susceptible people will catch pertussis if they are exposed.
Currently, most adults and teens are susceptible because the protective effect of their childhood pertussis immunizations has waned. To address this problem, it is now recommended that all teens receive a booster vaccine at 11-18 years of age (preferably between 11-12 years).
Between 60 and 80 percent of infants are protected after the first 3 doses of vaccine, but this protection begins to disappear when they are toddlers. After the 4th immunization at 18 months old, 80 percent are protected for the next 3 to 4 years. The 5th dose, at kindergarten entry, protects them for another few years. A booster dose is recommended during the teen years to bolster immunity to pertussis.
People who have been exposed to probable or confirmed pertussis should either receive a course of preventative antibiotics (and I say this as someone strongly opposed to the overuse of antibiotics), or be kept home from daycare, school, or work for at least 3 weeks. If the exposed individual develops symptoms, they should receive antibiotics to prevent further spread of pertussis to others.
Children under age 7 who have been exposed should receive a pertussis vaccine, unless they have already had 4 doses of pertussis vaccine (and the last dose within 3 years), or unless there is a compelling reason not to immunize them. Exposed teens 11-18 years old who have not already received a booster vaccine should receive one.
My one-month-old son's cheeks are very rough. It looked at first like a rash. There are small bumps that are sometimes red and irritated looking, and other times it looks very clear, but the roughness is still there. Is that a rash or is it baby acne? Is there something I can do to treat it?
Beckie Huckle - San Bruno, California
To many parents' dismay, their beautiful newborn's face breaks out with red bumps. One of the most common causes for red bumps on an infant’s face is baby acne. It tends to occur at about the same age as the baby's peak gas production and fussiness. How attractive! (This all coincides with parents' maximum sleep deprivation.) Parents are often quite concerned both about how these bumps look and about their significance.
In baby acne, these bumps, Beckie, are quickly fleeting evidence of the connection between your body and your son's. During the final moments of your pregnancy, your hormones crossed the placenta into your son. Among other things (such as maturing his lungs), this stimulated the oil glands on your son's skin, eventually giving rise to the baby acne.
Fleshy or red pimples can be present at birth, but typically appear at 3 to 4 weeks of age. They occur predominately on the cheeks, but are also quite common on the forehead and chin. Whiteheads are sometimes present. This condition tends to come and go until the baby is between 4 and 6 months old.
The acne will be most prominent when your son is hot or fussy (increased blood flow to the skin), or when his skin is irritated. If his skin comes into contact with cloth laundered in harsh detergents, or becomes wet from saliva or milk that he has spit up, the condition may appear worse for several days.
Gently cleanse his face once a day with water, and perhaps a mild baby soap. Oils and lotions do not help, and may aggravate the condition. If the acne is severe or lasts beyond 6 months, your pediatrician may prescribe a mild medicine to help.
Otherwise, you can expect that the rash will soon be a memory. The oil glands will disappear, and you won't see the acne again until you turn around once, and he's a teenager. This time the acne will be evidence that his own hormones are turning him into a man.
Infections can be avoided both by decreasing the exposure to germs and by boosting your child’s immunity. Click here for 6 powerful ways to decrease germ exposure.
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