Screening health care workers with interferon-γ release assay versus tuberculin skin test: impact on costs and adherence to testing (the SWITCH study).

Objective: To determine the price point at which an interferon-γ release assay (IGRA) is less costly than a tuberculin skin test (TST) for health care employee tuberculosis screening.

Methods: A multidecision tree-based cost model incorporating inputs gathered from time-motion studies and parallel testing by IGRA and TST was conducted in a subset of our employees.

Results: Administering a TST testing program costs $73.

Description of an influenza vaccination campaign and use of a randomized survey to determine participation rates.

Objectives: To describe the procedures used during an influenza immunization program and the use of a randomized survey to quantify the vaccination rate among healthcare workers with and without patient contact.

Design: Influenza immunization vaccination program and a randomized survey.

Setting: Johns Hopkins University and Health System.