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An Optimized Hemagglutination Inhibition (HI) Assay to Quantify Influenza-specific Antibody Titers
Published on: December 1, 2017
Haemophilus influenzae type b conjugate vaccine is highly effective in the Ugandan routine immunization program: a
Ellen Hyun-Ju Lee1, Rosamund F Lewis, Issa Makumbi
1Division of Bacterial Diseases, National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Tropical Medicine & International Health : TM & IH
|March 4, 2008
Summary
The Haemophilus influenzae type b (Hib) vaccine is highly effective in Uganda, preventing serious childhood illness. Routine immunization significantly reduces Hib meningitis cases, contributing to child survival.
Area of Science:
- Immunology
- Pediatrics
- Public Health
Background:
- Haemophilus influenzae type b (Hib) causes severe childhood meningitis.
- Hib vaccination is a key public health intervention globally.
- Assessing vaccine effectiveness in diverse settings like Uganda is crucial.
Purpose of the Study:
- To evaluate the effectiveness of the Hib vaccination program in Uganda.
- To determine the impact of Hib vaccine doses on preventing Hib meningitis.
Main Methods:
- A case-control study design was employed.
- Children hospitalized with confirmed Hib meningitis were compared to age-matched controls.
- Vaccine effectiveness was analyzed using conditional logistic regression.
Main Results:
- Only 15% of Hib meningitis cases had received two or more Hib vaccine doses.
- Hib vaccine effectiveness was 99% against no-dose comparison with neighborhood controls.
- Effectiveness was 96% when compared with hospital controls.
Conclusions:
- The Hib vaccine demonstrates high effectiveness within Uganda's routine immunization schedule.
- Sustained Hib vaccination is vital for preventing childhood morbidity and mortality.
- The findings support continued investment in Hib vaccination programs in similar settings.
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