Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the treatments for Common variable immunodeficiency ?
    ### Response:
    How might common variable immunodeficiency be treated?  The main treatment for common variable immunodeficiency (CVID) is Ig replacement therapy, which stops the cycle of recurrent infections. Ig may be taken intravenously (through the vein) or subcutaneously (by injection).
    