title: Recurrent meningococcemia associated with IgG2-subclass deficiency.
mesh_terms: D004406:Dysgammaglobulinemia / Q000150:complications*; D006801:Humans; D017099:IgG Deficiency; D007223:Infant; D008297:Male; D008589:Meningococcal Infections / Q000209:etiology*; D012008:Recurrence; D018805:Sepsis / Q000209:etiology*