ANSWER:  As of May, 2019 the Center for Disease Control updated their 2005 recomendation that all health care personnel have annual screening for Tuberculosis.

Here is the link for the CDC guidelines

All health care personnel should have a RISK ASSESSMENT

Before starting a job workers should receive the Risk Assessment, Symptom screening and a TB test.  After that initial test, no more testing (annual testing) is recommended for workers unless there is a know exposure to tuberculosis.