A nurse is concerned about the high incidence of STDs in the community college population and sets up a special STD screening. Which of the following groups of students would be encouraged to attend? (Select all that apply.)

Correct Answer: A

Rationale: The correct answer is A. Sexually active students currently receiving treatment for an STD should be encouraged to attend the STD screening because they are at high risk for having or transmitting STDs. They need regular monitoring and follow-up to ensure successful treatment and prevent the spread of infections. Choice B is incorrect because students who had been screened the previous year may have engaged in risky behaviors since then and could have contracted an STD in the meantime. They should still attend for regular screening. Choice C is incorrect because although these students may not currently be sexually active, their future sexual behavior is uncertain. Regular STD screenings are important for all sexually active individuals, regardless of their current activity. Choice D is incorrect because even if students do not "go all the way," they can still be at risk for STDs through other sexual activities. Regular screenings are recommended for all sexually active individuals to ensure early detection and treatment of infections.

Correct Answer: A

Rationale: The correct answer is A: Experimental. In an experimental study, researchers actively manipulate the variables, in this case, assigning individuals to receive different formulations of the blood pressure medication. This allows for controlled comparisons between the two formulations. Observational studies (B) do not involve intervention or manipulation. Case-control studies (C) compare individuals with a certain condition to those without, and cohort studies (D) follow a group of individuals over time to observe outcomes, but they do not involve random assignment of interventions like in this scenario.

Correct Answer: A

Rationale: The correct answer is A because public health surveillance involves monitoring occurrences of public health problems to understand patterns, trends, and risk factors. It helps in detecting outbreaks, planning interventions, and evaluating the effectiveness of public health programs. Choice B is incorrect as it refers to the response to surveillance findings, not surveillance itself. Choice C is incorrect as surveillance involves systematic data collection rather than gathering information from community members. Choice D is incorrect as it pertains to contact tracing, which is a specific activity within outbreak investigation, not surveillance.

Correct Answer: A

Rationale: Step 1: Prior BCG vaccination can cause false-positive results in Mantoux TST testing. Step 2: T-Spot testing is unaffected by prior BCG vaccination, making it more reliable in this case. Step 3: Choosing T-Spot over Mantoux will provide a more accurate assessment of TB infection. Step 4: Therefore, the correct answer is A. Summary of other choices: B: Age of family member is not a factor in choosing between T-Spot and Mantoux. C: Symptoms indicate active TB, which would require further diagnostic testing, not just T-Spot. D: Negative chest X-ray and sputum tests suggest no active TB, but doesn't impact choice of T-Spot over Mantoux.

Correct Answer: A

Rationale: The correct answer is A: System for Enteric Disease Response, Investigation, and Coordination (SEDRI). The CDC would utilize SEDRI for tracking and investigating foodborne illnesses because it is specifically designed for managing enteric diseases like foodborne illnesses. SEDRI allows for prompt response, coordination, and investigation of outbreaks, helping the CDC to effectively monitor and control the spread of foodborne illnesses. Choice B is incorrect because it is not a specific surveillance system related to enteric diseases. Choice C, the National Notifiable Disease Surveillance System (NNDSS), focuses on a broader range of notifiable diseases and may not be as specialized for foodborne illnesses as SEDRI. Choice D, the Global Outbreak Alert and Response Network (GOARN), is more focused on global outbreaks rather than specific surveillance for foodborne illnesses within the US.