WHITEHOUSE STATION, N.J.--(BUSINESS WIRE)--Merck & Co., Inc. will hold its second-quarter 2008 sales and earnings conference call with institutional investors and analysts to begin at 5:30 p.m. EDT on Monday, July 21, instead of the previously scheduled 9 a.m. EDT. The second-quarter sales and earnings news release and supplemental financial disclosures will be distributed after the close of market today.
