Vaccines

Widespread vaccination has led many parents to underappreciate the severity of vaccine-preventable diseases. Many new parents have never seen anyone with such infections as diphtheria, mumps, or measles--or their potential clinical consequences. Some parents wonder why their child needs to be vaccinated against seemingly nonexistent diseases and worry about vaccine safety. The images on the following pages and on page S18 serve as a small dose of reality for those who may have been lulled into a false sense of security.

A 5-year-old boy with seizure disorder and developmental delay presented to our allergy and immunology clinic for a severe reaction that developed after he had received multiple vaccines. One month before our evaluation, the patient had been vaccinated against varicella, hepatitis A, and influenza at his pediatrician's office. Latex gloves were not used for vaccine administration.

As a clinical immunologist with a special interest in vaccines, it is a pleasure to present this special issue of Consultant For Pediatricians. Vaccines are among the major achievements of modern medicine. Once common serious childhood illnesses, including tetanus, diphtheria, polio, mumps, and measles, are now rarely seen in this country. It is ironic, therefore, that with the precipitous decline in the incidence of many infectious diseases brought about by widespread vaccination--and the very recent availability of several new vaccines--many parents have been lulled into a false sense of security about the risk posed by the diseases these vaccines have been designed to prevent.

With the introduction of Gardasil--the vaccine that protects against infection with human papillomavirus (HPV) types 6, 11, 16, and 18--pediatricians are fielding an increasing number of questions from parents about this disease. Parents want to know how prevalent HPV infection actually is and how much of an impact the vaccine will have.

Consultations & Comments: "Focus on Vaccines" Correction: MMR Never Contained Thimerosal

ABSTRACT: Because the clinical diagnosis of influenza can be difficult, pediatricians often turn to rapid antigen tests to confirm a clinical suspicion of influenza. However, keep in mind that the predictive values of such tests vary with disease prevalence; despite the favorable sensitivity and specificity of most such tests, their positive predictive value is relatively low early and late in the influenza season. In addition, to gauge the predictive accuracy of a test in a particular setting, consider the degree of clinical suspicion as well as the frequency of influenza in the community at that time. Rapid influenza tests are most often helpful when the likelihood of influenza is intermediate (ie, in the early phase of influenza season when there is very strong clinical suspicion or during the peak of the season when there is moderate clinical suspicion).

The July 2006 issue, which featured an update on STDs, included a case on primary syphilis in a teenager (page 427). Therapy with intramuscular penicillin G (weekly for 3 weeks) or ceftriaxone (daily for 2 weeks) was recommended. However, the CDC's newly published guidelines on STD treatment recommend therapy with a single intramuscular dose of 2.4 million units of penicillin G.1 If the patient is allergic to penicillin, the alternative is therapy with doxycycline (100 mg orally bid for 14 days) or tetracycline (500 mg qid for 14 days). Ceftriaxone is not a recommended treatment for syphilis.

Staphylococcal pneumonia can be a rapidly progressive illness that is commonly associated with pneumothorax and pleural effusion. Affected patients require close monitoring. Consider staphylococcal infection in any infant with pneumonia whose health deteriorates clinically or radiographically.

Your doctor has just told you that you have an infection with human papillomavirus (HPV). Most teens have a lot of questions about warts and HPV. This guide will help answer some of those questions.

The patient, a 14-year-old boy, comes to see you the same day he was bitten by a dog. In the examination room, you find him seated comfortably in the chair with his right hand and arm bandaged.

Key words: type 2 diabetes melllitus, childhood obesity

Pediatricians around the countryare being bombardedwith questions about avianflu. This brief review of thecurrent status of the avian fluoutbreak and its treatment and preventionprovides the informationyou will need to answer the mostpressing patient questions.

This 12-month-old girl presented with a diffuse rash that was first noticed by the child's day-care provider a day earlier. A fever (temperature of 39.4°C [103°F]) subsequently developed.

In the Photoclinic item titled "Vaccine-Induced Herpes Zoster," by Julie L. Cantatore-Francis, MD, and Yelva Lynfield, MD (Consultant For Pediatricians, June 2005, pages 290 and 291), the dosage of acyclovir was incorrectly printed as 80 mg/d divided into 4 doses. The correct dosage is 80 mg/kg/d divided into 4 doses. We apologize for the error.

An otherwise healthy 22-month-old was referred for evaluation of a pruritic rash on her buttocks and right leg of 5 days' duration. Her mother reported that the rash had begun as red bumps and blisters on the buttocks that subsequently spread to the right leg.

With the significant decline in disease caused by Haemophilus influenzae type b and Streptococcus pneumoniae achieved through vaccination, Neisseria meningitidis has moved to the forefront. Its emergence as the most important cause of bacterial meningitis challenges the pediatrician to prevent and control this terrible disease. Meningococcal disease can be easily misdiagnosed. It may present with different clinical manifestations, and its signs and symptoms may mimic those of common viral illnesses, such as influenza. The onset and progression of meningococcal disease are rapid. Although the rate of disease is highest in infants, morbidity and mortality rates for this disease are highest in adolescents and young adults, despite the existence of effective therapies.1