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Texas Southern University - BIOL 347 Chapter 20 Epidemiology True / False Questions 1)Generally, the smaller the infective dose, the lower the chance of disease

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Texas Southern University - BIOL 347

Chapter 20

Epidemiology

True / False Questions

1)Generally, the smaller the infective dose, the lower the chance of disease.

 

2. A fly may serve as a mechanical vector.

 

3. The portal of entry typically has little effect on the course of a disease.

 

4. The very young and the elderly are more susceptible to infectious disease.
5. Diseases with long incubation periods are more likely to spread extensively.

 

6. A gradual rise in numbers during an epidemic indicates a common source epidemic.

 

7. Cross-sectional surveys are very useful in establishing cause of a disease.

 

8. A placebo is a mock drug.

 

9. In a double-blind test the treating physician knows who is getting the actual treatment.

 

10. Nosocomial infections are those acquired at a hospital.

 

11. Human population growth and expansion contribute to emergence of diseases.

 

 

Essay Questions

 

12. Why is nosocomial disease such a significant problem?