Merck to Hold Guidance Conference Call and Web Cast on Dec. 4

WHITEHOUSE STATION, N.J. - Merck & Co., Inc. will conduct a conference call with institutional investors and analysts beginning at 8:00 a.m. EST on Thursday, Dec. 4. Richard T. Clark, chairman, chief executive officer and president, and Peter N. Kellogg, executive vice president and chief financial officer, will provide an overview of the 2009 and the 2005 to 2010 long-term financial guidance during the call, which is consistent with its approach last year.

Journalists are invited to listen only, by calling (706) 758-9928 or (800) 399-7917. A replay of the call will be available starting at 11 a.m. EST on Dec. 4 through 5 p.m. EST on Dec. 11. To listen to the replay, dial (706) 645-9291 or (800) 642-1687 and enter ID # 73736995.

Investors, journalists and the general public may access a live audio Web cast of the call on Merck’s Web site at http://www.merck.com/newsroom/webcast. Software needed to listen to the Web cast is available on the corporate Web site and should be downloaded prior to the beginning of the Web cast. A replay of the Web cast will be available from 11 a.m. EST on Dec. 4 through 5 p.m. EST on Dec. 11. The financial guidance press release will also be available in the Merck online Newsroom.

About Merck
Merck & Co., Inc. is a global research-driven pharmaceutical company dedicated to putting patients first. Established in 1891, Merck discovers, develops, manufactures and markets vaccines and medicines to address unmet medical needs. The Company devotes extensive efforts to increase access to medicines through far-reaching programs that not only donate Merck medicines but help deliver them to the people who need them. Merck also publishes unbiased health information as a not-for-profit service. For more information, visit merck.com.