A 25-Year-Old Patient Has a Tuberculosis (TB) Skin Test Which

A 25-year-old patient has a tuberculosis (TB) skin test which reveals an area of induration of 12 mm. The patient is a recent immigrant from Mexico and lives in a homeless shelter. What is the recommended treatment for this patient?

A) Administer the bacillus Calmette-Guérin (BCG) vaccine
B) Begin isoniazid (INH) preventive therapy
C) Order isoniazid (INH) and Rifampin
D) Perform regular TB skin testing every few months