AreHaemophilus influenzaeInfections a Significant Problem in India? A Prospective Study and Review

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Abstract
It has been suggested Haemophilus influenzae serotype b (Hib) disease is uncommon in Asia. During 1993–1997, we conducted prospective surveillance of acute infections caused by H. influenzae in 6 academic referral Indian hospitals. The study included 5798 patients aged 1 month to 50 years who had diseases likely to be caused by H. influenzae; 75% of the patients were aged H. influenzae infections were detected, 97% of which were caused by Hib. Of 125 isolates, 108 (86%) were from children aged <5 years, and 11 (9%) were from adults aged µ18 years. Sixty-two percent of the patients had meningitis. The case-fatality rate was 11% overall and 20% in infants with Hib meningitis. Up to 60% of all isolates were resistant to chloramphenicol, ampicillin, trimethoprim-sulfamethoxazole, or erythromycin; 32% were resistant to ⩾3 antimicrobial drugs, but none were resistant to third-generation cephalosporins. These data suggest that available Hib vaccines will benefit Indian children.