Microbiology - chapter 11 - Haemophilus, Bordetella and Legiionella

Question 0

What type of Haemophilus influenzae is commonly associated with invasive disease in children?

Answer 0

Hemophilus influenzae with capsule b(virulence factor)

capsule b = bad for children

Question 1

Haemophilus influenzae, Bordetella pertussis and Legionella pneumophilia are all aquired through..?

Answer 1

Through the respiratory tract.

Question 2

Two bacteria associated with meningitis in children age 6 months to three years?

Answer 2

Haemophilus influenzae and Neisseria meningitides.

Hey! Teachers! Leave them kids alone! All in all…

Question 3

What are the HACEK organisms?

Answer 3

HACEK are slow growing organisms known to cause endocarditis.

Hemophilus species
Actinobacillus species
Cardiobacterium species
Eikenella species
Kingella species

Question 4

Four major virulence factors of Bordetella pertussis?

Answer 4

1 Pertussis toxin - activate adenylate cyclase(on is on forever)
2 Extra cytoplasmic adenylate cyclase - lowered H2O2 & superoxide
3 Filamentous hemagglutin - pili rod(adehesin)
4 Tracheal cytotoxin - destroy ciliated epithelial cells

Question 5

Three stages of whooping cough?

Answer 5

1 Catarrhal stage - 1 to 2 weeks, low grade fever, sniffles & sneeze.
2 Paroxysmal stage - lating a moth++, non productive cough.
3 Conalescent stage - resolution.

Question 6

In what environment do Legionella pneumophilia thrive?

Answer 6

Water, H20, aqua & wody.

Question 7

Two pathologies produces by Legionella pneumophilia?

Answer 7

Pontiac disease - flu like symptoms. Headache, muscle aches, fatigue, fever & chills.

Legionnaires disease - high fever and severe pneumonia.

Legionella haemophilus can produce disease ranging from mild asymptomatic infection to severe pneumonia.