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Reactions after 3 or more doses of pneumococcal polysaccharide vaccine in adults in Alaska. |
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AbstractBACKGROUND: Following vaccination with 23-valent pneumococcal polysaccharide vaccine (PPV), pneumococcal antibody levels decline to prevaccination levels within 6-10 years. The Advisory Committee on Immunization Practices does not recommend routine revaccination because data on the safety and effectiveness of additional doses are insufficient. METHODS: To determine whether medically attended adverse events occur more frequently after the third dose of PPV than after the first or second dose, we performed a retrospective review of medical records from a computer database for health care facilities that serve more than one-half of the Alaska Native population. All persons who had received > or = 3 PPV doses (n = 179) were included in the review, as were a randomly selected comparison group of 181 persons who had received 1 or 2 doses. RESULTS: Only 1 (0.55%) of 179 persons who had received > or = 3 PPV doses and 4 (2.76%) of 181 persons in the comparison group had a medically attended adverse event, and no severe adverse events were recorded. CONCLUSION: We found no difference in the risk of medically attended adverse events following > or = 3 doses of PPV, compared with 1 or 2 doses.
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