Soeters HM et al. Current Epidemiology and Trends in Invasive Haemophilus Influenzae Disease. Clinical Infectious Diseases. 2018
Post-vaccine era epidemiology and organism distribution data
Marques JG et al. Haemophilus Influenzae Type B Vaccine Failure in Portugal. Pediatric Infectious Disease Journal. 2023
Vaccine failure rates and mechanism
Point-of-care imaging
Hung TY et al. Bedside Ultrasonography as a Safe and Effective Tool to Diagnose Acute Epiglottitis. American Journal of Emergency Medicine. 2011
Alphabet P sign description and technique
Darras KE et al. Imaging Acute Airway Obstruction in Infants and Children. Radiographics. 2015
Lateral neck radiograph technique and safety considerations
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