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Microbiology

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Gram Negative Coccobacilli

Question
33 out of 58
 

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)



A Haemophilus influenza

B Klebsiella pneumoniae

C Legionella pneumophila

D Streptococcus pyogenes

Ans. A Haemophilus influenza

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.

Gram Negative Coccobacilli Flashcard List

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