Frequency of SPAD in Adult Patients

Inclusion Criteria: * 18 to 65 year old patients * With a history of recurrent bacterial infections of upper and/or lower respiratory tract for at least 2 years, and fulfilling the specific following criteria: * Recurrent benign infections currently requiring 6 courses of antibiotics /year or more, or Bilateral bronchiectasis/bronchiolitis (after exclusion of cystic fibrosis and ciliary dyskinesia) AND recurrent benign infections currently requiring 3 courses of antibiotics /year or more or A history of severe upper/lower respiratory tract bacterial infection, and/or invasive infection with Streptococcus pneumonia, Streptococcus pyogenes or Haemophilus influenzae, which required hospitalization in the last 2 years, AND recurrent benign infections currently requiring 3 courses of antibiotics /year. * Normal serum IgG, IgA, IgM and IgG subclasses levels, normal CH50 and serum complement C3 and C4 proteins levels, normal T cells count * Normal B cell count, normal serum protein electrophoresis and immunofixation. (\* excepted for Pseudomonas aeruginosa colonization) Exclusion Criteria: * Any general condition that predisposes to infections: solid or hematological malignancies, diabetes mellitus, severe alcohol or intravenous drug abuse, chronic liver or kidney failure, human immunodeficiency virus infection, anatomic or functional asplenia, drug-induced 1 neutropenia, or solid organ or hematopoietic stem cell transplantation; * Any local predisposing factor to infections: cigarette smoking (\> 10 pack-year and/or 5 cigarettes/day), underlying infection (tuberculosis, influenza…), chronic obstructive pulmonary disease, oral, dental or skin conditions favorizing infections, streptococcal skin infections * Any other SID or PID diagnosed before inclusion * Pregnancy * PPV23 administration in the last 2 years (risk of hyporesponsiveness)