Haemophilus & Bordetella MCQ (Medical Microbiology)

Multiple Choice Question on Haemophilus & Bordetella

1) Which of these small, gram-negative microorganisms are important human pathogens?
a) Haemophilus influenzae
b) Bordetella pertussis
c) Haemophilus parainfluenzae
d) A, B and C

2) …..................was one of the leading bacterial pathogens that caused severe upper respiratory tract infections and even death in children during the nineteenth century, it is now rare in countries where routine vaccination is given to children.
a) Haemophilus influenzae
b) Bordetella pertussis
c) Haemophilus influenzae type b
d) Francisella tularensis

3) Which of the following Haemophilus spp require both the X (hemin) and V (NAD) factors for its growth?
a) H. parainfluenzae
b) H. ducreyi
c) H. aprophilus and H. paraaprophilus
d) H. haemolyticus

4) Which of the following is NOT the virulence factors responsible for the pathogenicity of Bordetella pertussis, a gram-negative coccobacillus that causes “whooping cough”?
a) An Endotoxin
b) A fimbriae and hemagglutinin
c) A pertussis toxin
d) A tracheal cytotoxin

5) Which of the following bacteria is responsible for “Malta fever” in humans which is caused primarily by contact with animals or animal products?
a) Haemophilus ducreyi
b) Francisella tularensis
c) Brucella spp
d) Haemophilus parainfluenzae

6) Name the specific food when consumed by humans that can cause “malta fever”?
a) Unpasteurized milk or cheese
b) Uncooked cauliflower
c) Plums
d) Cranberry juice

7) …....................is aerobic, non-spore forming, coco bacillus and can be transmitted to humans through water, soil, animals, also through aerosols
a) Haemophilus influenzae
b) Brucella spp
c) Francisella tularensis
d) Neisseria gonorrohoea

8) Which of the following subspecies of Francisella tularensis is the most virulent for humans?
a) novicida
b) tularensis
c) holartica
d) mediasiatica

9) All of the following are the symptoms caused by the pathogenic Brucella spp, EXCEPT
a) Fever
b) Swollen lymph nodes
c) Abdominal and muscular pain
d) Lesions on eyelids

10) Which of the following is not the general characteristics of Haemophilus ducreyi?
a) Gram-negative coccobacillus
b) It grows well on standard chocolate agar
c) It requires X factor but not the V factor
d) It is susceptible to erythromycin

11) Name the antibiotics group which is commonly NOT used for the treatment of influenza caused by Haemophilus influenzae?
a) Third generation cephalosporins
b) Aminopenicillins with a beta-lactamase inhibitor
c) Chloramphenicol with ampicillin
d) Amoxicillin with penicillin

12) What is a Quellung reaction?
a) The capsule detection test
b) The serological antibody detection test
c) Direct antigen detection test
d) The bacterial motility test

13) The preventive measure for Bordetella pertussis infection is vaccination method, the pertussis vaccine is usually administered in combination with toxoids of Diphtheria and tetanus (DTaP). The pertussis vaccine is primarily important for children, preteens, pregnant women and adults who have never received it, what doses of this vaccine is recommended for children under six years?
a) Six doses of vaccine
b) Three doses of vaccine
c) Five doses of vaccine
d) Four doses of vaccine

14) .................... is the causative agent of the chancroid, one of the most common sexually transmitted disease and is characterized by painful lesions and genital ulcers?
a) Neisseria gonorrohoeae
b) Haemophilus haemolyticus
c) Haemophilus ducreyi
d) Treponema pallidum

15) Which of the following do not prove to be helpful for the treatment of whooping cough?
a) Cough syrups and expectorants
b) DPT vaccine
c) Macrolides
d) None of the above

Multiple Choice Answers
1-d) A, B and C
2-c) Haemophilus influenzae type b
3-d) H. haemolyticus
4-a) An Endotoxin
5-c) Brucella spp
6-a) Unpasteurized milk or cheese
7-c) Francisella tularensis
8-b) tularensis
9-d) Lesions on eyelids
10-b) It grows well on standard chocolate agar
11-d) Amoxicillin with penicillin
12-a) The capsule detection test
13-c) Five doses of vaccine
14-c) Haemophilus ducreyi
15-a) Cough syrups and expectorants