A 9-Month-Old Boy Was Suspected of Having an Immune Deficiency

A 9-month-old boy was suspected of having an immune deficiency because he had many recurrent infections with Streptococcus pneumoniae.Laboratory tests revealed a normal percentage of T cells and T-cell subsets but a lack of mature B cells and immunoglobulins.This boy most likely has:

A) Wiskott-Aldrich syndrome
B) DiGeorge syndrome
C) X-linked agammaglobulinemia
D) chronic granulomatous disease

Correct Answer:

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