Please select the True statement regarding Haemophilus influenzae.
A) It is a virus.
B) All strains are encapsulated.
C) It frequently causes meningitis in adults.
D) Polysaccharide antigen from type b is used in vaccination.
E) It is a highly motile spirochete.

Question

Quizplus · Accepted Answer

Haemophilus influenzae type b (Hib) is a gram-negative bacteria that can cause serious infections such as meningitis, pneumonia, and epiglottitis. Vaccination using a polysaccharide antigen from Hib is highly effective in preventing infections caused by this strain. Option A is incorrect as Haemophilus influenzae is a bacteria, not a virus. Option B is incorrect as not all strains are encapsulated. Option C is incorrect as meningitis caused by Haemophilus influenzae is more common in children under 5 years old. Option E is incorrect as Haemophilus influenzae is not a spirochete.

Please Select the True Statement Regarding Haemophilus Influenzae