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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934
                          (Amendment No.____________)*


                       Healthcore Medical Solutions, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                              Class A Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    42220B101
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                Adam D. Eilenberg
                    Ehrenreich Eilenberg Krause & Zivian LLP
                         11 East 44th Street, 17th Floor
                              New York, N.Y. 10017
                                 (212) 986-9700
- --------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)


                                 October 1, 1998
- --------------------------------------------------------------------------------
                      (Date of Event which Requires Filing
                               of this Statement)

If the filing person has previously  filed a statement of Schedule 13G to report
the  acquisition  which is the subject of the  Schedule  13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*The  remainder  of this cover page shall be filed out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                        (Continued on following page(s))





CUSIP No.   42220B101                 13D                   


- --------------------------------------------------------------------------------
   1   NAME OF REPORTING PERSON
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON



                           SIGA Pharmaceuticals, Inc.
- --------------------------------------------------------------------------------
   2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [ ]
                                                             (b)  [ ]


- --------------------------------------------------------------------------------
   3   SEC USE ONLY




- --------------------------------------------------------------------------------
   4   SOURCE OF FUNDS*



                                       WC
- --------------------------------------------------------------------------------
   5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
       ITEMS 2(d) OR 2(e)                                         [  ]


- --------------------------------------------------------------------------------
   6   CITIZENSHIP OR PLACE OF ORGANIZATION


                                       DE
- --------------------------------------------------------------------------------
                  7    SOLE VOTING POWER
   NUMBER OF           300,800 (including 149,800 Warrants     
     SHARES                     exercisable at $6.50 per share)
  BENEFICIALLY    --------------------------------------------------------------
    OWNED BY      8    SHARED VOTING POWER
      EACH             0
   REPORTING      --------------------------------------------------------------
     PERSON       9    SOLE DISPOSITIVE POWER
      WITH             300,800 (including 149,800 Warrants 
                                exercisable at $6.50 per share)
                  --------------------------------------------------------------
                  10   SHARED DISPOSITIVE POWER
                       0


- --------------------------------------------------------------------------------
  11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       300,800 (including 149,800 Warrants exercisable at $6.50 per share)
- --------------------------------------------------------------------------------
  12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [  ]

- --------------------------------------------------------------------------------
  13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

       
     5.003% (taking into account only shares of Common Stock; 9.50% if also
           including 149,800 Warrants exercisable at $6.50 per share)
- --------------------------------------------------------------------------------
  14   TYPE OF REPORTING PERSON*

       

                                       CO
- --------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.  42220B101                   13D                   

                                  Schedule 13D


Item 1. Security and Issuer

This  statement  relates to the Class A Common  Stock,  $.01 par value  ("Common
Stock"),  of Healthcore  Medical Solutions,  Inc. (the "Issuer"),  which has its
principal executive office at 11904 Blue Ridge Boulevard, Grandview, MO 64030.

Item 2. Identity and Background

The  Reporting  Person  is  SIGA  Pharmaceuticals,  Inc.,  a  development  stage
biopharmaceutical  company  incorporated  in  Delaware,  with an  address of 420
Lexington Avenue, New York, NY 10170.  During the last five years, the Reporting
Person has not been (i) convicted in a criminal  proceeding  (excluding  traffic
violations or similar misdemeanors);  or (ii) a party to a civil proceeding of a
judicial or  administrative  body of competent  jurisdiction  and as a result of
such proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.

Item 3. Source of Funds or Other Consideration

The Reporting  Person acquired an aggregate of 1,200 shares of Common Stock at a
price of $.875 and $1.16 and 149,800 units  ("Units"),  each Unit  consisting of
one share of Common Stock and one currently exercisable Warrant (the "Warrants")
to purchase one share of Common Stock (at an exercise price of $6.50 per share),
in several open market  purchases  from  September 11, 1998 through  October 15,
1998 at an average  purchase price of $ 1.11 per Unit. The Reporting Person used
its working capital to effect the purchases.

The  Reporting  Person  currently  holds 151,000  shares of Common Stock,  which
represents  5.003% of the class of Common Stock. The Reporting Person also holds
149,800   Warrants  that  are  included  in  the  Units,   which  are  currently
exercisable,  even though the exercise price of the Warrants is substantially in
excess of the current  market price for the Common Stock.  The Reporting  Person
currently has no intention of exercising  any of the Warrants.  If the shares of
Common Stock issuable upon exercise of the Warrants are included with the shares
of Common Stock  currently  held by the  Reporting  Person,  as provided in Rule
13(d)-(3)(d)  under  the  Securities  Exchange  Act of  1934,  as  amended,  the
percentage  of the  entire  class  of  Common  Stock  beneficially  held  by the
Reporting Person is 9.50%.

Item 4. Purpose of Transaction

The  Reporting  Person  acquired  the  shares of Common  Stock and the Units for
investment  purposes.  The  Reporting  Person  intends to request a meeting with
management  and/or  representatives  of the Board of Directors of the Issuer for
the purpose of discussing methods of maximizing or enhancing shareholder value.

While the Reporting  Person has no present  intention to purchase any additional
shares of Common Stock or Units,  it may,  depending  upon its evaluation of the
Issuer's business and prospects, determine to increase or decrease or dispose of
its  position in the Issuer.  In making any such  determination,  the  Reporting
Person will also take into consideration other available business  opportunities
and general economic conditions.






Item 5. Interest in Securities of the Issuer

See Items 7 through 13 of the Schedule 13D cover page.

Item 6. Contracts, Arrangements,  Understandings or Relationships with Respect
        to Securities of the Issuer.

None.

Item 7. Materials to be Filed as Exhibits.

None.




Signature


     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


Date:  October 15, 1998  

                                           SIGA PHARMACEUTICALS, INC.

                                           By: /s/ JUDSON A. COOPER
                                              ----------------------------------
                                               Name:  Judson A. Cooper
                                               Title: Chairman of the Board