Exhibit 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-3 of our report dated February 14, 2003 relating to the
financial statements, which appears in SIGA Technologies, Inc.'s Annual Report
on Form 10-KSB for the year ended December 31, 2002. We also consent to the
incorporation by reference of our report dated July 17, 2003 relating to the
financial statements of Plexus Vaccine Inc., which appears in the Current Report
on Form 8-K/A of SIGA Technologies, Inc. dated July 22, 2003. We also consent to
the reference to us under the heading "Experts" in such Registration Statement.


                                        /s/ PRICEWATERHOUSECOOPERS LLP

New York, New York
July 24, 2003