SIE Sierra Health Svcs

NEW YORK, Feb. 26 /PRNewswire/ -- West Pharmaceutical Services Inc. (NYSE:WST) will be added to the S&P SmallCap 600 after the close of trading on Thursday, February 28, 2008. West Pharmaceutical Services will take the place of Sierra Health Services Inc. (NYSE:SIE), which was removed from the S&P SmallCap 600 after today's close of trading pursuant to its completed acquisition by S&P 500 constituent UnitedHealth Group Inc. (NYSE:UNH). Standard & Poor's will monitor this transaction, and post any relevant updates on its website: http://www.standardandpoors.com/. West Pharmaceutical Services manufactures components and systems for injectable drug delivery and plastic packaging, and delivery system components. Headquartered in Lionville, PA, the company will be added to the S&P SmallCap 600 GICS (Global Industry Classification Standard) Health Care Supplies Sub-Industry index. Following is a summary of the change: S&P SMALLCAP 600 INDEX - February 28, 2008 COMPANY GICS ECONOMIC SECTOR GICS SUB-INDUSTRY ADDED West Pharmaceutical Health Care Health Care Supplies Services Additions to and deletions from an S&P equity index do not in any way reflect an opinion on the investment merits of the companies concerned. About Standard & Poor's Standard & Poor's, a division of The McGraw-Hill Companies (NYSE:MHP), is the world's foremost provider of financial market intelligence, including independent credit ratings, indices, risk evaluation, investment research and data. With approximately 7,500 employees, including wholly-owned affiliates, located in 21 countries, Standard & Poor's is an essential part of the world's financial infrastructure, and has played a leading role for more than 140 years in providing investors with the independent benchmarks they need to feel more confident about their investment and financial decisions. For more information, visit http://www.standardandpoors.com/. About The McGraw-Hill Companies: Founded in 1888, The McGraw-Hill Companies (NYSE:MHP) is a leading global information services provider meeting worldwide needs in the financial services, education and business information markets through leading brands such as Standard & Poor's, McGraw-Hill Education, BusinessWeek and J.D. Power and Associates. The Corporation has more than 280 offices in 40 countries. Sales in 2007 were $6.8 billion. Additional information is available at http://www.mcgraw-hill.com/. DATASOURCE: UnitedHealth Group Inc. CONTACT: David M. Blitzer, Ph.D. Managing Director & Chairman of the Index Committee (212) 438-3907 Web site: http://www.standardandpoors.com/ http://www.mcgraw-hill.com/

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