Quiz: Common Variable Immunodeficiency (CVID)
Question 1 of 3  

Common variable immunodeficiency (CVID) is an immunodeficiency disorder characterized by very low antibody (immunoglobulin) levels despite a normal number of B cells (lymphocytes). In which of the following age groups is this disorder most often diagnosed?

  • A.


  • B.


  • C.

    Adults ages 20- 40

  • D.

    Adults age 65 and older

Am I correct?