After assessing the health care needs of an elementary school, the nurse determines that an increased prevalence of pediculosis capitis is a priority problem. The nurse develops a 2-month program with the goal to eradicate the condition in the school. The program includes educational pamphlets sent home to parents and regular assessment of children by the school nurse. Which action should the nurse implement to evaluate the effectiveness of the program?

A) Instruct on technique of "stop, drop & roll" at assembly:
This is a primary prevention intervention aimed at educating students on how to prevent burns in the event of a fire. It does not address a specific identified problem but rather provides general safety education.

B) Involve the parent teacher association (PTA) in a fund raising event for the new gym:
This action focuses on raising funds for a new gym, which is related to school improvement and development rather than addressing an immediate health issue. It does not fall under secondary intervention for an identified problem.

C) Invite 1st grade parents to a "Meet the Teachers" event:
This intervention focuses on fostering relationships between parents and teachers and improving school engagement. While valuable, it does not address a specific health problem that requires secondary intervention.

D) Send letters to parents regarding a recent lice infestation:
This is a secondary prevention intervention aimed at addressing an already identified problem—in this case, a lice infestation. By informing parents, the nurse is helping to manage and control the spread of lice among students, which is a direct response to an identified health issue.

A. Rescreen the entire prison population in 6 weeks:
While rescreening may be necessary at some point, it is not the immediate priority. The focus should be on diagnosing and managing the individuals who have already tested positive.

B. Start the two inmates on antitubercular medications:
Starting antitubercular medications is important, but it should only be done after confirming that the individuals have active TB. The positive skin test indicates exposure but does not confirm active TB disease.

C. Refer the two inmates for chest x-rays:
A chest x-ray is crucial to determine whether the positive skin test indicates active TB disease or latent TB infection. This step is essential for accurate diagnosis and appropriate management. It helps distinguish between active TB, which requires treatment, and latent TB, which may require different management strategies.

D. Screen the prison guards for TB:
While screening the prison guards could be a part of a broader infection control plan, it is not the most immediate priority. The focus should be on further evaluating and managing the inmates who have tested positive.