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Acute epiglottitis despite vaccination with haemophilus influenzae type B vaccine
Insights
A fully vaccinated child was misdiagnosed with laryngotracheobronchitis but actually had Haemophilus influenzae type B epiglottitis. Vaccination does not guarantee protection and can complicate diagnosis, posing life-threatening risks.
Area of Science:
- Pediatrics
- Infectious Diseases
- Vaccinology
Background:
- Haemophilus influenzae type B (Hib) infections can cause severe upper airway obstruction.
- Hib vaccination is a standard preventative measure in childhood.
- Accurate diagnosis is critical for managing airway emergencies.
Observation:
- A 20-month-old child presented with acute upper airway obstruction requiring intensive care.
- The child had completed the recommended Hib vaccine series.
- Initial presumptive diagnosis was acute laryngotracheobronchitis.
Findings:
- The child was ultimately diagnosed with acute epiglottitis caused by Hib.
- The presumptive diagnosis of laryngotracheobronchitis was incorrect.
- Hib epiglottitis occurred despite complete Hib vaccination.
Implications:
- Complete Hib vaccination does not confer absolute immunity against Hib disease.
- Hib vaccination may alter the clinical presentation of invasive Hib infections.
- Misdiagnosis due to vaccination status can lead to delayed or inappropriate treatment, with potentially fatal outcomes.
Abstract:
We present the case of a 20-month-old child who required admission to the intensive care with a presumptive diagnosis of acute laryngo-tracheo-bronchitis, for the management of acute upper airway obstruction. This child had received a complete course of Haemophilus influenzae type B (Hib) vaccine. Subsequent events showed that the diagnosis was not laryngo-tracheo-bronchitis but acute epiglottitis. We propose that a full course of vaccination is no guarantee against a subsequent illness with Hib and may actually lead to the wrong diagnosis and possibly life-threatening consequences.