Merck & Co., Inc. Conference Call and Audio Web Cast

TO:	Pharmaceutical Analysts, Reporters and Editors
WHAT:	Merck & Co., Inc. will host a conference call for pharmaceutical analysts and journalists to discuss the APPROVe study of VIOXX.
WHO:	Peter S. Kim, Ph.D., president, Merck Research Laboratories Kenneth C. Frazier, senior vice president and general counsel, Merck Raymond P. Bain, vice president, Biostatistics and Research Decision  Sciences, Merck Research Laboratories
WHEN:	Tuesday, May 30, 2006, 4:45 p.m. ET
DIAL-IN:	In the United States, dial (800) 561-2813/ Passcode: 82833258 Outside of the United States, dial (617) 614-3529/ Passcode: 82833258
REPLAY:	A replay of this call will be available from 6:45 p.m. ET, May 30 until 11:59 p.m. ET, June 13. In the United States, dial (888) 286-8010/ Passcode: 92540523 Outside of the United States, dial (617) 801-6888/ Passcode: 92540523
WEBCAST:	A live audio Web cast will be available at: http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=190190&eventID=1326501

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