Current immunomodulatory medications, absolute lymphocyte count (ALC) and IgG level around the time of dose 1 are provided. B – BNT162b2, C – CoronaVac, M (route) – intramuscular, D – intradermal, M (sex) – male, F – female, HIDS – HyperIgD syndrome, XLA – X-linked agammaglobulinemia, X-CGD – X-linked chronic granulomatous disease, HSCT – hemopoietic stem cell transplant, X-MEN – X-linked immunodeficiency with magnesium defect, Epstein-Barr virus infection, and neoplasia, AT – ataxia telangiectasia, XLT – X-linked thrombocytopenia, HLH – hemophagocytic lymphohistiocytosis, AR-CGD – autosomal recessive chronic granulomatous disease, CINCA - chronic infantile, neurologic, cutaneous, and articular syndrome, CVID – common variable immunodeficiency, SCN – severe congenital neutropenia, MTX – methotrexate, SCIG – subcutaneous immunoglobulin, IVIG, intravenous immunoglobulin, MMF – mycophenolate mofetil, pred – prednisolone, HCQ – hydroxychloroquine, G-CSF – granulocyte-colony stimulating factor, NA – not available.