Coccobacillus

Question 1

Strict (obligate) parasites; may be part of normal flora of human upper respiratory tract and mouth

Gram-negative coccobacillus (very small, short rod)

Type B is the most virulent.

Answer 1

Haemophilus influenzae

Question 2

vaccine has significantly reduced infections in children (in type B)

Answer 2

Vaccine for HIB

Haemophilus influenzae

Question 3

Fulminating meningitis in unvaccinated children less than 3 years old & in elderly

Epiglottitis & laryngitis in children

Otitis media

Sinusitis

Pneumonia – 2-18%, especially adults (in the top 5-6 of causes)

Answer 3

Haemophilus influenzae

Question 4

Conjunctivitis (bacterial pink eye)

Answer 4

Haemophilus influenzae

Question 5

Type B polysaccharide capsule

fimbriae

IgA proteases

ciliostatic factor

Answer 5

Haemophilus influenzae

Question 6

Chocolate agar for growth factors

Immunologic ID from CSF

Beta lactamase tests

Answer 6

Haemophilus influenzae

lab diagnosis

Question 7

School of fish arrangement

Causes chancroid (Asia)

Answer 7

Haemophilus ducreyi

Question 8

prevents host cilia from conducting ciliary movements, reducing innate host defense

Answer 8

ciliostatic

H. influenzae