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Immunization Works! August 2006 issue
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The Centers for Disease Control and Prevention’s Immunization Works Monthly Update is provided to national health care provider and consumer groups for distribution to their members and constituencies. The immunization information provided is non-proprietary and is encouraged to be widely disseminated and shared.
Vaccine to Reduce the Risk of Shingles (Herpes Zoster)
The Food and Drug Administration (FDA) recently announced the approval of Zostavax, a live, attenuated vaccine for use in people 60 years of age or older to reduce the risk of shingles (herpes zoster). Shingles, or herpes zoster, is caused by the chickenpox virus that remains in the nerve roots of all persons who had chickenpox and can come out in the body again years later to cause illness. Anyone who has had varicella is at risk for developing shingles. It is estimated that the lifetime risk of developing shingles is 25%-30% in the general population and that 1 million or more cases of shingles occur each year in the United States. While shingles can occur in people of all ages, it is most common in those over 60 years of age, and the risk increases with age. Shingles is characterized by clusters of blisters, which develop on one side of the body and can cause severe pain that may last for weeks, months or years after the virus reappears. Zostavax was studied in a large randomized controlled clinical trial which included 39,000 men and women aged 60 years and over followed up for a mean duration of 3 years. The use of shingles vaccine reduced the incidence of shingles by 51% (64% for persons aged 60-69 years) and of postherpetic neuralgia by 67%.
The CDC’s Advisory Committee on Immunization Practices (ACIP) will consider recommendations for use of shingles vaccine at its October 2006 meeting. For additional information on Zostavax, please visit the U.S. Food and Drug Administration’s (FDA’s) website at www.fda.gov/bbs/topics/NEWS/2006/NEW01378.html
Other News & Summaries
Tdap and Pregnant Women
The Advisory Committee on Immunization Practices (ACIP) just released new recommendations for the prevention of tetanus, diphtheria and pertussis among pregnant women. The recommendations state that pregnant women who previously have not received a dose of Tetanus and Diphtheria Toxoids and Acellular Pertussis (Tdap) – including women who are breastfeeding – should receive Tdap after delivery, before discharge from the hospital or birthing center, if two years or more have elapsed since the last Td in most situations. If Tdap cannot be administered before discharge, it should be given as soon as feasible. The complete set of recommendations (including special situations, contraindications, and precautions) can be found on CDC’s website at www.cdc.gov/vaccines/recs/provisional/. Also, a new Tdap Vaccine Information Statement (VIS) including information for pregnant women is now available (see “Meetinngs, Conferences and Resources” section below).
Mumps Outbreak Subsides
The mumps outbreak that began in Iowa in December 2005 appears to be subsiding, as over 98% of cases had onset dates from January 1 through June 30. From January 1 through July 22, 2006, a total of 4908 cases of mumps were reported to CDC from 15 outbreak-affected states. The majority of cases, 4894 or 98% were reported from eight states (Iowa, Kansas, Illinois, Nebraska, Missouri, South Dakota, Pennsylvania, and Wisconsin) that had endemic, in-state transmission (i.e., outbreak states). An additional 14 cases associated with travel to, or temporary residence in an outbreak-affected state were reported from seven states (Colorado, Minnesota, Mississippi, New York, New Mexico, Michigan, and Texas). It is expected that once the outbreak is over, the number of cases being reported each week will be higher than in previous years, due to improved mumps surveillance.
The age-group-specific incidence was highest among persons 18-24 years old (32 per 100,000) reflecting transmission in college and university settings. While most cases occurred among persons who had received 2 doses of mumps-containing vaccine (the vaccine has an estimated efficacy of 90%), preliminary data suggest attack rates were higher among persons who had received only 1 dose of vaccine. In July, the American College Health Association (ACHA) distributed a letter to universities and colleges across the United States. The letter encouraged the vaccination of enrolled students with 2 doses of MMR vaccine before returning to school. State and local health departments are encouraged to remain vigilant for mumps cases, especially among college and university students when they return to school in the fall. For more information about mumps, please visit CDC’s mumps website at www.cdc.gov/vaccines/vpd-vac/mumps/
Varicella Outbreak, Nebraska 2004
On November 19, 2004, a school nurse notified the Nebraska Health and Human Services System (NHHSS) of a varicella outbreak in an elementary school (grades kindergarten through 7). In collaboration with local health department officials and CDC, NHHSS initiated a retrospective cohort study to determine the magnitude of the outbreak, assess vaccine coverage and effectiveness, and compare disease severity among vaccinated and unvaccinated students. The study found that attack rates for vaccinated and unvaccinated students were 13% (15 of 115 students) and 67% (18 of 27 students), respectively. Vaccinated students were significantly more likely to have milder disease (67% versus 11%), fewer days of rash (5 versus 7.3) and to miss fewer days of school (3 versus 5.2) than unvaccinated students. The findings highlight the importance of improving varicella vaccination coverage and implementing varicella vaccination school-entry requirements. To view the complete Morbidity and Mortality Weekly Report (MMWR) report, please visit www.cdc.gov/mmwr/preview/mmwrhtml/mm5527a3.htm
Meetings, Conferences, and Resources
New VIS for Influenza, Tdap
CDC recently posted new Vaccine Information Statements (VIS) for influenza and Tetanus and Diphtheria Toxoids and Acellular Pertussis (Tdap). VIS for TIV and LAIV for the 2006-2007 influenza season are now posted. Also, a revised interim Tdap VIS contains recommendations regarding Tdap and pregnancy. Pregnancy is not considered a contraindication for Tdap (as was implied in the previous edition), but Td is usually preferred for pregnant women who need diphtheria and tetanus protection. Both VIS statements can be found at www.cdc.gov/vaccines/pubs/VIS/
Promote HCW Vaccination
CDC has recently updated posters and flyers for healthcare worker (HCW) vaccinations, “Healthcare Workers! Are your vaccinations up-to-date?” The updated materials reflect the Advisory Committee on Immunization Practices’ (ACIP’s) new pertussis vaccine recommendations. They can be downloaded and printed in black and white or commercial quality color from www.cdc.gov/vaccines/pubs/flyers-brochures.htm
Upcoming Satellite Broadcast
CDC will host Immunization Update 2006 on August 10 at 9:00 AM ET. Topics to be covered on this live satellite broadcast and web cast include influenza vaccine, pertussis vaccine for adolescents and adults, revised recommendations for hepatitis A vaccination of children and the new vaccines for rotavirus, herpes zoster and human papillomavirus (HPV). For further details, please visit www.phppo.cdc.gov/phtn/immup-2006
CDC Needs Pilot Testers
CDC has an ongoing need for volunteers to pilot test immunization training courses. Volunteers are particularly needed in the following occupations: physicians, pharmacists, health educators, medical assistants and nurses. To learn more about becoming a pilot tester, please send an email to nippilot@cdc.gov
CDC Job Openings
CDC is committed to recruiting and hiring qualified candidates for a wide range of immunization positions. Researchers, Medical Officers and Epidemiologists as well as other specialties are often needed to fill positions within CDC. For a current listing of positions available at CDC, please visit www.cdc.gov/hrmo/hrmo.htm
Respiratory News & Resources
As immunization is now part of CDC’s proposed National Center for Immunization and Respiratory Diseases (see Immunization Works April edition) readers can periodically expect to see news about respiratory diseases. As always, Immunization Works is committed to providing CDC partners with new information and resources that can help frontline health professionals.
New Cough Guidelines
New guidelines on the diagnosis and treatment of cough in Adults and Children have been released by the American College of Chest Physicians (ACCP). These practice guidelines 1) more narrowly focuses the guidelines on the diagnosis and treatment of cough, the symptom, in adult and pediatric populations, and minimizes the discussion of cough as a defense mechanism; 2) improves on the rigor of the evidence-based review and describes the methodology in a separate section; 3) updates and expands, when appropriate, all previous sections; and 4) adds new sections with topics that were not previously covered. The new guidelines can be found at the ACCP’s website at www.chestjournal.org/content/vol129/1_suppl/ (exit)
Get Smart
CDC’s “Get Smart, know When Antibiotics Work” campaign offers an electronic newsletter. Readers may view past issues and subscribe at www.cdc.gov/drugresistance/community/news.htm
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Content last reviewed on August 4, 2006
Content Source: National Center for Immunization and Respiratory Diseases
