Haemophilus influenzae

Question 1

Describe the gram stain appearance of H. influenzae.

Answer 1

gram negative (pink) coccobacillus

Question 2

Which diseases can H. influenzae cause?

Answer 2

In infants and young children, H. influenzae type b (Hib) causes bacteremia, pneumonia, epiglottitis and acute bacterial meningitis.
On occasion, it causes cellulitis, osteomyelitis, and infectious arthritis.