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Epidemiology and Disease Control

Screening and Diagnostic Tools

You are an epidemiologist interested in food poisoning caused by salmonella.

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Using the Internet, conduct a research to gain additional insight into the causes of food poisoning.

Based on your research, answer the following questions:

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  • What are the different types of screening or diagnostic tests available to study salmonella? What the advantages and drawbacks of each of the tests?
  • If you were asked to employ the use of screening or diagnostic tests to study the transmission of salmonella, which screening or diagnostic tests would you recommend? Why?
  • For each test, which of the following principles would influence the study outcome and results:
    • Bias
    • Confounding
    • Values of sensitivity on epidemiological study validity
    • Values of specificity on epidemiological study validity
  • How will each principle influence the results of your epidemiological study based upon the type of screening or diagnostic tool?
  • Which screening or diagnostic tool would you recommend as the most effective in the epidemiological study of salmonella transmission? Why?

Support your responses with examples.

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Cite any sources in APA format.

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University of Nairobi