Fade, R. H., Mohemed Fleeh Dareef, and S. M. M. Microbiology. “Effect of The Pfizer-Biontech Vaccine on Ifn-Γ Serum Levels and Its Genetic Variations in Response to Vaccination”. South Eastern European Journal of Public Health, Oct. 2024, pp. 882-7, doi:10.70135/seejph.vi.1612.