<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from
MedImmune, Inc.'s quarterly report on Form 10-Q for the nine months ended
September 30, 2000 and is qualified in its entiredty by reference to such
filing.
</LEGEND>
<CIK> 0000873591
<NAME> MEDIMMUNE, INC.
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> Dec-31-2000
<PERIOD-START> Jan-1-2000
<PERIOD-END> Sep-30-2000
<CASH> 68,644
<SECURITIES> 385,019
<RECEIVABLES> 34,647
<ALLOWANCES> 0
<INVENTORY> 47,892
<CURRENT-ASSETS> 526,411
<PP&E> 88,767
<DEPRECIATION> 0
<TOTAL-ASSETS> 859,690
<CURRENT-LIABILITIES> 62,421
<BONDS> 9,799
0
0
<COMMON> 2,107
<OTHER-SE> 783,405
<TOTAL-LIABILITY-AND-EQUITY> 859,690
<SALES> 268,409
<TOTAL-REVENUES> 285,204
<CGS> 72,816
<TOTAL-COSTS> 225,383
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 376
<INCOME-PRETAX> 80,327
<INCOME-TAX> 25,303
<INCOME-CONTINUING> 55,024
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 55,024
<EPS-BASIC> 0.26
<EPS-DILUTED> 0.25
</TABLE>