Summary of Notifiable Diseases,
United States 1996
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Of 275 reported cases among children age greater than 5 years, the serotype was reported for only 141; of these 38 cases (27%) were type b, which is the only serotype of H. influenzae disease that is preventable by vaccine. Lack of information on serotype prevented accurately determining whether most of these cases were vaccine-preventable or whether they represented vaccine failures.
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