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Updated: Aug 22, 2026

Assessing Respiratory Immune Responses to Haemophilus Influenzae
Published on: June 29, 2021
Haemophilus influenzae type b diseases in children: a pre-vaccination study
M Bakir1, A el-Khadir, K Devadas
1Department of Paediatrics, Ministry of Health, Al-Ain hospital, Al-Ain, United Arab Emirates.
Insights
Acute invasive Haemophilus influenzae type b (Hib) infections were common in UAE children before vaccination. Most cases involved meningitis in infants, leading to significant morbidity but no deaths.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Haemophilus influenzae type b (Hib) caused severe invasive diseases in children before widespread vaccination.
- Data on the clinical and laboratory features of invasive Hib diseases in the United Arab Emirates (UAE) prior to vaccination are limited.
Purpose of the Study:
- To describe the clinical and laboratory characteristics of acute invasive H. influenzae diseases in children admitted to a tertiary pediatric ward in Al-Ain, UAE.
- To establish a baseline understanding of Hib disease burden before the introduction of the Hib vaccine in the UAE.
Main Methods:
- Retrospective review of medical records for children diagnosed with bacteriologically proven invasive H. influenzae disease.
- Analysis of clinical presentations, laboratory findings, and outcomes over a 4-year period.
Main Results:
- 38 children had invasive H. influenzae disease; all isolates were serotype b.
- Meningitis was the most common diagnosis (60.5%).
- The majority of affected children (66%) were under 12 months of age, with significant morbidity observed in 12 children, though no deaths occurred.
Conclusions:
- Invasive Hib disease posed a substantial health burden on young children in the UAE prior to vaccination.
- The findings underscore the importance of the Hib vaccine in preventing severe pediatric infections and associated complications.
Abstract:
Haemophilus influenzae type b (Hib) can now be prevented by vaccination. We present the clinical and laboratory characteristics of acute invasive H. influenzae diseases in children admitted over a 4-year period to a tertiary paediatric ward of the Al-Ain medical district hospital, before vaccination became available in the United Arab Emirates. In all, 38 children had bacteriologically proven H. influenzae invasive diseases and all the isolates were serotype b. Meningitis was diagnosed in 60.5% of the children and 66% of the studied children were under 12 months. There were no deaths but substantial morbidity occurred in 12 children.
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