Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of X-linked agammaglobulinemia ?
    ### Response:
    What are the signs and symptoms of X-linked agammaglobulinemia? Affected infants are usually healthy for the first few months of life until they begin to develop recurrent bacterial infections. The most common bacterial infections are ear infections, pneumonia, pink eye, sinus infections, and infections that cause chronic diarrhea.
    