 Eligible patients with a new diagnosis of indolent lymphoma will be enrolled after informed consent. All patients will be tested for possible known infectious diseases that may contribute to antigen drive H. Pylori; Hepatitis C, as well as for other infectious diseases not yet established as contributing to antigen drive Borrelia; Chlamydia; and small bowel overgrowth. All patients will have a complete history recorded regarding other possible chronic infections, and an infectious disease consultation, as indicated. 