QUESTION 1 Which of the following are “vehicles of infection” as discussed in cl

Question

QUESTION 1
Which of the following are “vehicles of infection” as discussed in class?
A. • Water, food, flies’ feet
B. • Food, air, mosquito
C. • Water, air, sneezes
D. • Food, Water, doorknobs
E. • Water, food, air

QUESTION 2
What is the difference between biological and mechanical vector transmission?
A. • Biological transmission involves mosquitos while mechanical transmission involves only flies.
B. • Biological transmission requires any arthropod while mechanical transmission requires a contaminated object in a hospital.
C. • Biological transmission of a disease need to reproduce inside an arthropod while mechanical transmission needs an arthropod to carry a disease on its body, like its feet.
D. • Biological transmission and mechanical transmission are not considered vector transmission.
E. • Biological transmission needs droplets in air, while mechanical transmission moves through water.

QUESTION 3
A nurse is caring for patients in the ICU. He accidentally brushes against the bed of a patient with Clostridium difficile, commonly known as C.diff, though no one knows the patient is infected at that time. He continues his shift and “bumps” into several other beds while going about his duties, unaware that he might be spreading the infection. The transmission of the disease in this scenario is best described by which of the following?
A. • Direct transmission
B. • Vector transmission
C. • Droplet transmission
D. • Indirect transmission
E. • Reservoir transmission

QUESTION 4
John Snow was the first person to carry out a descriptive epidemiology study in 1848. He was tracking the outbreak of cholera in London by mapping the location of infected peoples’ homes. The found out that the disease incidence was highest by which city feature?
A. • A water pump
B. • A butcher’s shop
C. • A toy store
D. • A waste disposal area (sewer)
E. • A monument

QUESTION 5
Bed bugs have been found to carry Chagas disease.
True
False

QUESTION 6
The elderly do NOT need herd immunity for protection since they’ve been vaccinated in early life.
True
False

QUESTION 7
Epidemiological studies prove the causation of many attributes of disease.
True
False

QUESTION 8
If a yeast infection occurs after a course of antibiotics, it is fair to say that it is because of a disturbance of the normal microbiota of the person.
True
False

Explanation / Answer

1.E. Water, food, air.

2. A, C

3.D. Indirect transmission

4.D. A waste diaposal area ( sewer )

5. False, kissing bugs or triatominae carry chagas disease

6. False

7. True

8. True

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