Ghandour, Lina, Wissam Yaacoub, and George F Araj. “Assessing COVID IGRA and IgG Antibodies in Healthcare Workers Post Vaccination”. The Journal of Infection in Developing Countries 19, no. 05 (May 31, 2025): 654–660. Accessed March 30, 2026. https://www.jidc.org/index.php/journal/article/view/40452527.