Immunodeficiency 31b, also known as imd31b, is related to immunodeficiency 31a and viral infectious disease. An important gene associated with Immunodeficiency 31b is STAT1 (Signal Transducer And Activator Of Transcription 1), and among its related pathways/superpathways are NF-kappaB Signaling and Host-pathogen interaction of human coronaviruses - interferon induction. Affiliated tissues include myeloid and t cells, and related phenotypes are recurrent viral infections and recurrent mycobacterial infections