Form 10-Q/A
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                                                  SECURITIES AND EXCHANGE COMMISSION
                                                        WASHINGTON, D. C. 20549


                                                              FORM 10-Q/A
                                                     Amendment No. 1 to Form 10-Q


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                      {X} QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


                                           For the quarterly period ended September 30, 2001

                                                      Commission File No. 0-19131




                                                                MedImmune, Inc.
                                             (Exact name of registrant as specified in its charter)


                                        Delaware                           52-1555759
                           (State or other jurisdiction of             (I. R. S. Employer
                           incorporation or organization)              Identification No.)



                                           35 West Watkins Mill Road, Gaithersburg, MD 20878
                                          (Address of principal executive offices) (Zip Code)



                                   Registrant's telephone number, including area code (301) 417-0770


Indicate  by check  mark  whether  the  Registrant  (1) has filed all  reports  required  to be filed by  Section 13 or 15(d) of the
Securities  Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file
such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes [X] No [ ]

As of  September 30, 2001, 214,044,267 shares of Common Stock, par value $0.01 per share, were outstanding.




                                                                EXPLANATORY NOTE

This quarterly report on Form 10-Q/A for the quarterly period ended September 30, 2001 is being filed solely to amend the list of
exhibits included in Item 6 therein and to re-file a new version of Exhibit 10.129.  Exhibit 10.129 was previously and is hereby
filed pursuant to a confidential treatment request filed with the Securities and Exchange Commission.  The Form 10-Q/A constitutes
Amendment No. 1 to MedImmune, Inc.'s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2001.


                                                                 MEDIMMUNE, INC.

                                                                    PART II
                                                               OTHER INFORMATION


Item 6.           Exhibits and reports on Form 8-K

                  (a)      Exhibits:

                  10.129  Amendment  No. 3 to  Distribution  and Marketing  Collaboration  Agreement  between  MedImmune  Oncology,
                  Inc. and ALZA Corporation.*


                  (b)      Reports on Form 8-K:

                  Report Date               Event Reported
                  -----------               --------------
                  9/11/01                   MedImmune Accelerates Reacquisition
                                            of U.S. Rights to Ethyol From ALZA


* Confidential treatment has been requested.  The copy filed as an exhibit omits the information subject to the confidentiality
request.  Such information has been filed separately with the Securities and Exchange Commission.


                                                                      SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act  of  1934,  the registrant  has duly  caused  this  report  to be
signed  on its  behalf  by the undersigned thereunto duly authorized.



                                            MEDIMMUNE, INC.
                                            (Registrant)




                                            /s/: Gregory S. Patrick
Date: December 14, 2001                     Gregory S. Patrick
                                            Senior Vice President and Chief Financial Officer