IOMAI Corporation to Announce Year-End and Fourth Quarter 2006 Financial Results and Host Webcast on Friday, March 23

GAITHERSBURG, Md., March 20 /PRNewswire-FirstCall/ -- Iomai Corporation today announced that it will release year-end and fourth quarter 2006 financial results before the markets open and hold a conference call and live webcast to discuss corporate and clinical progress on Friday, March 23, 2007 at 11:00 a.m. Eastern Time.

Conference Call Details

To access the live conference call on Friday, March 23, 2007 at 11:00 a.m. Eastern Time via phone, please dial 866-825-3209 from the United States and Canada or 617-213-8061 internationally. The conference ID is 80705357. Please dial in approximately ten minutes prior to the start of the call. A telephone replay will be available beginning approximately one hour after the call through March 30, 2007 and may be accessed by dialing 888-286-8010 from the United States and Canada or 617-801-6888 internationally. The replay passcode is 67915258.

To access the live and subsequently archived webcast of the conference call, go to the Investor Relations section of the Company’s website at http://www.iomai.com . Please connect to the web site at least 15 minutes prior to the call to allow for any software download that may be necessary. The webcast is also being distributed through the Thomson StreetEvents Network. Individual investors can listen to the call at www.earnings.com, Thomson’s individual investor portal, powered by StreetEvents. Institutional investors can access the call via Thomson StreetEvents (www.streetevents.com), a password-protected event management site.

ABOUT IOMAI CORPORATION

Iomai Corporation discovers and develops vaccines and immune system stimulants, delivered via a novel, needle-free technology called transcutaneous immunization (TCI). TCI taps into the unique benefits of a major group of antigen-presenting cells found in the outer layers of the skin (Langerhans cells) to generate an enhanced immune response. Iomai is leveraging TCI to enhance the efficacy of existing vaccines, develop new vaccines that are viable only through transcutaneous administration and expand the global vaccine market. Iomai currently has four product candidates in development: three targeting influenza and pandemic flu and one to prevent E. coli-related travelers’ diarrhea. For more information on Iomai, please visit www.iomai.com.

Iomai Corporation

CONTACT: Russell P. Wilson, Senior Vice President, Chief Financial Officerand General Counsel of Iomai Corporation, +1-301-556-4478, orinvestors@iomai.com; or Brian Reid of WeissComm Partners, Inc.,+1-703-402-3626, or breid@weisscommpartners.com

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