ATI RN
Epidemiologic Question Questions
Question 1 of 5
For the cruise ship scenario described in Question 7, if you suspected that the norovirus may have been transmitted by ice made or served aboard ship, how might you display “place”?
Correct Answer: B
Rationale: Cabin spot maps link cases to ship locations, aiding ice exposure analysis.
Question 2 of 5
One week, a state health department received substantially more case reports of a disease in one county than had been reported during the previous 2 weeks. No increase was reported in neighboring counties. Possible explanations for this increase include which of the following? (Choose one wrong answer)
Correct Answer: D
Rationale: Outbreak (A), batching (B), or duplicates (C) are likely. Population growth (D) is improbable short-term.
Question 3 of 5
Which infection continues to increase in the United States?
Correct Answer: D
Rationale: Treatable STDs, such as gonorrhea, chlamydia, and syphilis, are still occurring at significant rates. Gonorrhea had plateaued or declined until 2009 but increased steadily since that time. Chlamydia, the most commonly reported bacterial disease in the United States, reached $1,441,789$ cases in 2014, although some of this increase is thought to be the result of improved screening for the infection.
Question 4 of 5
The nurse could not find a vaccine in the refrigerator. The unopened vaccine vial had been put in a storage cabinet with the other medications. The nurse drew up the appropriate dose in the syringe and then put the vial of vaccine in the refrigerator. Which would be the most likely result?
Correct Answer: B
Rationale: Primary vaccine failure is the failure of a vaccine to stimulate any immune response. It can be caused by improper storage that may render the vaccines ineffective, improper administration route, or exposure of light-sensitive vaccines to light. Secondary vaccine failure is the waning of immunity following an initial immune response, often occurring with immunosuppressed and organ transplant patients in whom the immune memory is essentially destroyed. Although the injection will not feel so cold to the client, the problem that will result is primary vaccine failure.
Question 5 of 5
Which best describes the advantage of the web of causation model in comparison with the epidemiological triangle model?
Correct Answer: D
Rationale: Although it is a more recently created model, the web of causation model is more useful because it illustrates the complexity of relationships among causable variables. It is not easier to understand and use as it has more variables than the three (agent, host, and environment) in the epidemiological model.