A method of committing fraud by sending emails to the customers of a legitimate online business, such as a bank, that pretend to be from that business and ask for information such as account numbers or passwords. phishing.
Research the causes of these diseases that are similar to, or related to, Common Variable Immunodeficiency: 1  CVID. 2  Primary immunodeficiencies. 3  Immunoglobulin deficiency.  Immunoglobulin 1  G. 2  IgG. more related diseases...Â».
To be considered a primary immunodeficiency, the cause of the immune deficiency must not be secondary in nature (i.e., caused by other disease, drug treatment, or environmental exposure to toxins).igns and symptoms [edit]. The precise symptoms of a primary immunodeficiency depend on the type of defect. Generally, the symptoms and signs that lead to the diagnosis of an immunodeficiency include recurrent or persistent infections or developmental delay as a result of infection.