EXHIBIT 99.2


                                             CERTIFICATION PURSUANT TO
                                              18 U.S.C. SECTION 1350,
                                              AS ADOPTED PURSUANT TO
                                   SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of MedImmune, Inc. (the "Company") on Form 10-Q for the period ending
September 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I,
Gregory S. Patrick, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or 15 (d) of the Securities Exchange
     Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material respects, the financial
     condition and results of operations of the Company.



/s/ Gregory S. Patrick
------------------------------
Gregory S. Patrick
Chief Financial Officer
November 8, 2002