Clinical and immunological features of common variable immunodeficiency in Mexican patients.

Background: Common variable immunodeficiency (CVID) is characterised by hypogammaglobulinaemia and a broad clinical spectrum, mainly showing recurrent bacterial infections accompanied sometimes by increased susceptibility to chronic lung disease, autoimmunity, and neoplastic diseases.

Objectives: To evaluate the clinical and immunological characteristics of patients with CVID in Mexico.

Methods: This is a retrospective analysis of 43 patients with CVID from the Immunology Division of seven different reference centres in Mexico.