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Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: mmwrq@cdc.gov. Type 508 Accommodation and the title of the report in the subject line of e-mail. Notice to Readers Availability of Meningococcal Vaccine in Single-Dose Vials for Travelers and High-Risk PersonsThe Food and Drug Administration has approved a single-dose vial of quadrivalent polysaccharide vaccine against Neisseria meningitidis serogroups A, C, Y, and W135. The single-dose vial replaces the previously available 10-dose vial, which, once reconstituted, has a 5-day shelf life. This limitation is obviated by the single-dose vial and should facilitate administration to persons at high risk. Immunization is recommended for persons with anatomic or functional asplenia and deficiencies of the terminal components of the complement system. Additionally, travelers to areas with hyperendemic or epidemic meningococcal disease should be immunized (1). Updated travel advisories can be obtained from travelers' clinics, county and state health departments, and CDC. The vaccine is not recommended for routine use in the United States for three reasons: 1) meningococcal disease is infrequent (approximately 3000 cases per year); 2) no vaccine exists for serogroup B, which accounts for about 50% of cases in the United States; and 3) vaccine is not efficacious against group C disease in children less than 2 years of age (2). This age group accounts for 28% of the group C cases in the United States (CDC, unpublished data). In adults, the protective efficacy of the vaccine is 85%-95% for disease caused by serogroups A or C (3,4). Efficacy data are not available for serogroups Y and W135, but the vaccine is immunogenic for both of these serogroups (5-7). Side effects of the vaccine are mild and infrequent, consisting primarily of erythema and induration at the site of injection and low-grade fever. Protective immunity is achieved 10-14 days after vaccination. The new single-dose tetravalent vaccine is available from local distributors or Connaught Laboratories, Inc., A Pasteur Merieux Company (telephone (800) 822-2463). Physicians are encouraged to report all cases of meningococcal disease to their local and state health departments. Reported by: Meningitis and Special Pathogens Br, Div of Bacterial Diseases, Center for Infectious Diseases, CDC. References
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