CD40LG and COVID-19: The recently published cohort study by Fernández-Buhigas et al. also managed to find the three main subtypes of SARS-CoV-2 anti-S1RBD antibodies—IgA (79.6%), IgG (3.1%) and IgM (19.7%)—in colostrum samples from women with laboratory-confirmed SARS-CoV-2 infection during pregnancy (any trimester), delivery, or immediately postpartum (not vaccinated against COVID-19).