After employment, how often must health care workers undergo another tuberculin skin test?

The correct answer is that health care workers must undergo another tuberculin skin test annually. This annual requirement is established to ensure the ongoing safety and health of both health care workers and the patients they serve. The annual testing helps to identify any new cases of tuberculosis (TB) that may arise, particularly in a healthcare setting where exposure to TB can be more prevalent. Regular testing ensures that any potential infections are caught early, allowing for timely treatment and minimizing the risk of transmission within healthcare facilities.

The rationale for the frequency also stems from guidelines established by health authorities, including the Centers for Disease Control and Prevention (CDC), which advocate for consistent monitoring of healthcare personnel's health status concerning TB, ensuring safer environments for both workers and patients.