For immediate release: August 2, 2007

VANCOUVER, BC – Tekmira Pharmaceuticals Corporation ("Tekmira"; TSX:TKM) announced today that it will hold a conference call and webcast on Wednesday August 8, 2007 at 8:00 am PST (11:00 am EST) to discuss second quarter 2007 operating results and to provide an update on developments at the Company.

About the Conference Call
To participate in the conference call, please dial 416-641-6111 or 1-866-696-5911. The call will be available for replay until August 17, 2007 by calling 416-695-5800 or 1-800-408-3053 and entering the pass code 3231265.

The live or archived webcast can also be accessed through the Company’s website at www.tekmirapharm.com.

About Tekmira
Tekmira Pharmaceuticals Corporation is a Canadian biopharmaceutical company developing and commercializing proprietary drugs and drug delivery systems to improve the treatment of cancer. Further information about Tekmira and this news release can be found at www.tekmirapharm.com.

Contact Information for Tekmira Pharmaceuticals Corporation

Investors
Ian Mortimer
Senior Vice President, Finance and Chief Financial Officer
Phone: 604-419-3200

Media
Nicole Rizgalla
James Hoggan & Associates Inc.
Phone: 604-742-4268
Email: nrizgalla@hoggan.com

The common shares of Tekmira are traded on the Toronto Stock Exchange under the trading symbol "TKM".