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<TITLE> Q1 2004 Earnings Release
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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SECURITIES AND
EXCHANGE COMMISSION </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>WASHINGTON, D. C. 20549 </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>FORM 8-K </FONT></H1>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>CURRENT REPORT </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>PURSUANT TO SECTION 13
OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Date of Report </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>April 21, 2004 </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=3><B>MedImmune, Inc.</B><BR>(Exact
name of registrant as specified in its charter)</FONT></P>



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     <TD WIDTH="33%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Delaware</FONT></TD>
     <TD WIDTH="33%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>0-19131</FONT></TD>
     <TD WIDTH="34%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>52-1555759</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(State or other jurisdiction of</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Commission File No.)</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(I.R.S. Employer Identification No.)</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;incorporation or organization)</FONT></TD>
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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>One MedImmune Way,
 Gaithersburg, MD 20878<BR>(Address of principal executive offices) (Zip Code) </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Registrant&#146;s
telephone number, including area code (301) 398-0000 </FONT></P>



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<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Item 5. Other Events and
Regulation FD Disclosure. </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On
April 21, 2004, MedImmune, Inc. (the &#147;Company&#148;) issued a press release
announcing the Company&#146;s results for the three-month period ended March 31, 2004 and
will conduct a previously-announced, publicly-available conference call to discuss those
results. A copy of the Company&#146;s press release is attached to this Current Report on
Form 8-K as Exhibit 99.1 and, other than the paragraph entitled &#147;2004 Guidance&#148;,
is incorporated by reference under this Item.</FONT> <BR><BR><H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3><B>Item 7. Financial Statements and
Exhibits.</B> </FONT></H1>

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<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exhibit&nbsp;No.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Description </FONT></P>

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<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Press
Release, dated April 21, 2004, &#147;MedImmune Reports Record Revenues and Earnings for First Quarter 2004&quot; </FONT></P>

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<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Item 12. Results of
Operations and Financial Condition. </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This press
release is hereby furnished in its entirety pursuant to Item 12. This information is not
deemed to be &#147;filed&#148; for the purposes of Section 18 of the Securities Exchange
Act of 1934 and is not incorporated by reference into any registration statements filed
under the Securities Act of 1933 or any report filed under the Securities Exchange Act of
1934, except as described above under the caption &#147;Item 5. Other Events and
Regulation FD Disclosure.&#148; </FONT></P>


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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SIGNATURE </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>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 hereunto duly authorized. </FONT></P>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>MEDIMMUNE, INC. </FONT></H1>

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<TD WIDTH=50%><FONT FACE="Times New Roman, Times, Serif" SIZE=2><B></B><BR><BR>
<BR>BY: /s/ Lota S. Zoth<BR>&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;<BR>
Lota S. Zoth<BR>Senior Vice President and Chief Financial Officer</FONT></TD>
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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Dated:  April 21, 2004 </FONT></P>



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Q1 2004 Earnings Release
SECURITIES AND
EXCHANGE COMMISSION
WASHINGTON, D. C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13
OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report
April 21, 2004
MedImmune, Inc.
(Exact
name of registrant as specified in its charter)
Delaware
0-19131
52-1555759
(State or other jurisdiction of
(Commission File No.)
(I.R.S. Employer Identification No.)
incorporation or organization)
One MedImmune Way,
 Gaithersburg, MD 20878
(Address of principal executive offices) (Zip Code)
Registrant's
telephone number, including area code (301) 398-0000
Item 5. Other Events and
Regulation FD Disclosure.
On
April 21, 2004, MedImmune, Inc. (the "Company") issued a press release
announcing the Company's results for the three-month period ended March 31, 2004 and
will conduct a previously-announced, publicly-available conference call to discuss those
results. A copy of the Company's press release is attached to this Current Report on
Form 8-K as Exhibit 99.1 and, other than the paragraph entitled "2004 Guidance",
is incorporated by reference under this Item.
Item 7. Financial Statements and
Exhibits.
Exhibit No.      
Description
99.1                 Press
Release, dated April 21, 2004, "MedImmune Reports Record Revenues and Earnings for First Quarter 2004"
Item 12. Results of
Operations and Financial Condition.
This press
release is hereby furnished in its entirety pursuant to Item 12. This information is not
deemed to be "filed" for the purposes of Section 18 of the Securities Exchange
Act of 1934 and is not incorporated by reference into any registration statements filed
under the Securities Act of 1933 or any report filed under the Securities Exchange Act of
1934, except as described above under the caption "Item 5. Other Events and
Regulation FD Disclosure."
SIGNATURE
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 hereunto duly authorized.
MEDIMMUNE, INC.
BY: /s/ Lota S. Zoth
——————————————
Lota S. Zoth
Senior Vice President and Chief Financial Officer
Dated:  April 21, 2004