Exhibit 23.1 Independent Auditors' Consent The Board of Directors Immunomedics, Inc.: We consent to incorporation by reference in the registration statements (No. 333-44501) on Form S-3 and (No. 33-56844 and 33-16260) on Form S-8 of Immunomedics, Inc. of our report dated August 3, 1998, relating to the consolidated balance sheets of Immunomedics, Inc. and subsidiary as of June 30, 1998 and 1997, and the related consolidated statements of operations, changes in stockholders' equity, and cash flows for each of the years in the three-year period ended June 30, 1998, which report appears in the June 30, 1998 annual report on Form 10-K of Immunomedics, Inc. KPMG Peat Marwick LLP Short Hills, New Jersey September 28, 1998