[Haemophilus vaccines. Their importance in tropical pediatrics].

Immunization with Haemophilus vaccine is undertaken to prevent invasive infections due to Haemophilus influenzae type b. Purulent meningitis is the most frequent chiefly in less than 2 years infants. Vaccine is composed of purified PRP which is poorly immunogenic and protective before two years. Actual vaccines are conjugate with protein which give them a protective and immunogenic power in very long young infants. They must be included in the schedule of infants immunizations, and fitting to other immunizations (DTP-Polio) is the best. The frequency of H. influenzae meningitis is high in tropics and those vaccines should be very useful. Cost of vaccine and inclusion in EPI are yet discussed for infants in tropical areas.