In researching cases of West Nile virus in the community, the ...

[Jipu 123]

In researching cases of West Nile virus in the community, the nurse explores how the interactions among people infected with this virus, mosquitoes, and the environment they share contribute to outbreaks of this disease.
 
  Which epidemiologic model is used in this case?
  A) Epidemiologic triad
  B) Wheel of causation
  C) Web of causation
  D) Natural history

Question 2

Who was one of the first people to study patterns of disease in populations and analyzed the weekly reports of births and deaths in London, the results of these analyses becoming the precursor of modern vital statistics?
 
  A) William Farr
  B) John Graunt
  C) Florence Nightingale
  D) John Snow

[CAPTAINAMERICA]

Answer to Question 1

Ans: A
Feedback:
The epidemiologic triad is the classic model based on the belief that health status is determined by the interaction of the characteristics of the host, agent, and environment, not by any single factor. The wheel of causation de-emphasizes the agent as the sole cause of disease while emphasizing the interplay of physical, biological, and social environments. The web of causation is an epidemiologic model that strongly emphasizes the concept of multiple causation while de-emphasizing the role of agents in explaining illness. Natural history is the course of a disease or condition from the onset to resolution.

Answer to Question 2

Ans: B
Feedback:
John Graunt analyzed weekly reports of births and deaths. William Farr is considered the father of modern statistics. Florence Nightingale used statistics to improve public health in England. John Snow performed epidemiologic research on transmission of cholera using natural experiments, mapping, and rates.