<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MEDIMMUNE,
INC.'S YEARLY REPORT ON FORM 10-K FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1997
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FILING.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          29,984
<SECURITIES>                                    20,342
<RECEIVABLES>                                   18,300
<ALLOWANCES>                                         0
<INVENTORY>                                     28,857
<CURRENT-ASSETS>                                 2,740
<PP&E>                                          65,254
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 170,336
<CURRENT-LIABILITIES>                           43,660
<BONDS>                                         85,363
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           244
<OTHER-SE>                                      40,292
<TOTAL-LIABILITY-AND-EQUITY>                   170,336
<SALES>                                         65,271
<TOTAL-REVENUES>                                80,964
<CGS>                                           34,433
<TOTAL-COSTS>                                  118,380
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,483
<INCOME-PRETAX>                               (36,895)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (36,895)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (36,895)
<EPS-PRIMARY>                                   (1.59)
<EPS-DILUTED>                                   (1.59)