Gram Negative Coccobacilli
Which of the following is true of Haemophilus influenzae?
|A||Most invasive infections occur in infants during the neonatal period|
|B||Invasive infections are most commonly associated with encapsulated strains|
|C||Most human infections are acquired from domestic pets|
|D||The organism can be readily cultured on sheep blood agar in an environment of elevated CO2|
Capsulated strains especially serotype b are responsible for invasive infections like meningitis and pneumonia.
In the first 2 months, neonates are protected due to circulating maternally acquired antibodies.
It grows poorly on blood agar as the V factor is not freely available on this medium.