Microbiology Quiz #21, Hemophilus Influenzae 

1. A 3-year-old boy is brought to the emergency department with a high fever, difficulty breathing, and a muffled voice. On examination, he appears anxious, has a high fever, and is drooling. A lateral neck X-ray shows a swollen epiglottis resembling a thumb. An image of the radiograph is shown below. Which of the following organisms is most likely responsible for this condition? 

Question 1 of 5

2. Which component is included in the vaccine used to prevent diseases caused by Haemophilus influenzae type b? 

Question 2 of 5

3. Which of the following is a virulence factor produced by Haemophilus influenzae that facilitates its colonization in the respiratory tract? 

Question 3 of 5

4. A child with a suspected case of Haemophilus influenzae meningitis is being evaluated. Which of the following culture media is most appropriate for isolating this bacterium? 

Question 4 of 5

5. A 4-year-old unvaccinated child is diagnosed with Haemophilus influenzae type b meningitis. Which of the following is the most appropriate initial treatment? 

Question 5 of 5


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