Joachim Gerlach, et al. “Spike Protein–Mediated Compound Immunodeficiency Cascade in COVID-19 and Long-COVID”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 79, no. 1, July 2026, pp. 216-52, https://gssrr.org/JournalOfBasicAndApplied/article/view/17771.