Final answer:
Health care facilities must conduct an initial TB risk assessment upon opening and then annually or more frequently if needed, following the CDC Guidelines for TB prevention.
Step-by-step explanation:
According to the CDC Guidelines for Preventing the Transmission of Mycobacterium Tuberculosis in Health Care Settings, health care facilities are required to conduct an initial risk assessment for tuberculosis (TB) when the facility is new, and then on an annual basis, or more frequently if there is evidence of ongoing transmission, a TB exposure, or changes in patient population.
Additionally, health care facilities should review and assess their current TB risk classification to ensure proper infection control measures are in place. This periodic reassessment of risk classification aims to help prevent the transmission of TB in health care settings, especially given the concern of transmission of drug-resistant strains of TB, like Multidrug-Resistant Tuberculosis (MDR-TB).