<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 six months ended June 30, 2000 and
is qualified in its entirety by reference to such filing.
</LEGEND>
<CIK> 0000873591
<NAME> MEDIMMUNE, INC.
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> Dec-31-2000
<PERIOD-END> Jun-30-2000
<CASH> 118,159
<SECURITIES> 330,289
<RECEIVABLES> 840
<ALLOWANCES> 0
<INVENTORY> 35,472
<CURRENT-ASSETS> 488,749
<PP&E> 89,101
<DEPRECIATION> 0
<TOTAL-ASSETS> 801,161
<CURRENT-LIABILITIES> 61,368
<BONDS> 10,012
0
0
<COMMON> 2,098
<OTHER-SE> 725,701
<TOTAL-LIABILITY-AND-EQUITY> 801,161
<SALES> 221,163
<TOTAL-REVENUES> 227,844
<CGS> 57,042
<TOTAL-COSTS> 167,901
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 243
<INCOME-PRETAX> 72,817
<INCOME-TAX> 23,665
<INCOME-CONTINUING> 49,152
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 49,152
<EPS-BASIC> 0.24
<EPS-DILUTED> 0.22
</TABLE>