PEDIATRICS INTERNATIONAL, vol.46, no.3, pp.280-284, 2004 (SCI-Expanded)
Background: Haemophilus influenzae type b (Hib) infection has a high morbidity and mortality rate especially in children under 5 years of age. The incidence of Hib disease in Turkey is not known, and Hib vaccine is not included in the National Immunization Program. The aim of this study was to determine the natural immunity to Hib of children 6-60 months of age living in the Park Health Center region of Ankara, Turkey.