Answer to Question 1
C
This child has a positive PPD with no pulmonary signs, so a 3-month course of isoniazid and rifapentine is indicated. Ethambutol is not recommended in children younger than 13 years.
Answer to Question 2
B
A chest x-ray should be obtained on all patients who have a positive purified protein derivative tuberculin test (PPD). The test was read in the appropriate time frame, so repeating the test is not necessary. This patient has a positive PPD. Referral to an infectious disease specialist should be made when the diagnosis is confirmed.