Gram Negative Coccobacilli
A 4-year-old boy is brought to the emergency room in extreme respiratory distress, with a temperature of 103.8 degrees Fahrenheit. He is drooling and has difficulty swallowing, and on physical examination, inspiratory stridor is noteD. A lateral x-ray shows swelling of the epiglottis. He has had no previous vaccinations. Which of the following agents is the most likely cause of these symptoms? (AIPG 2009)
The clinical history and X-ray is suggestive of laryngo-epiglottitis.
The likely pathogen is hemophilus influenza.
The most common serotype causing laryngo-epiglottitis is capsular serotype b. This serotype is responsible for 90% of the invasive infections caused by this bacterium.