CD40LG and COVID-19: The immune response triggered against this virus involves the secretion of three types of immunoglobulins, anti-SARS-CoV-2 immunoglobulins M (IgM), anti-SARS-CoV-2 immunoglobulins G (IgG), and anti-SARS-CoV-2 immunoglobulins A (IgA), which are essential biomarkers for identifying individuals affected by COVID-19, including those who may be asymptomatic or have recovered (Jacofsky et al., 2020).