Press Release Details

   Acquisition Advances Thomson Strategy to Improve Outcomes by Integrating
               Clinical Knowledge Into the Clinician's Workflow

STAMFORD, Conn., June 1 /PRNewswire-FirstCall/ -- The Thomson Corporation (NYSE: TOC; Toronto: TOC), a leading global provider of integrated information solutions to business and professional customers, today announced that it has acquired MercuryMD, Inc., the leading provider of mobile information systems serving the healthcare market. Terms of the transaction were not released.

MercuryMD, based in Research Triangle Park, N.C., supplies healthcare providers with mobile solutions to improve clinical workflow and operational efficiencies. The employees of MercuryMD, including founders Drs. Alan Ying and William Lawson, will become employees of The Thomson Corporation.

MercuryMD will become part of Micromedex, a Thomson Scientific and Healthcare business. Micromedex is the leading provider of integrated clinical knowledge solutions, and its products are the preferred resource for more than 3,400 hospitals throughout North America. Together, they will leverage their content, technology and expertise to provide evidence-based clinical knowledge integrated into tools such as laptops and PDAs. The combination of high quality clinical decision support and point-of-care tools will help healthcare professionals improve patient outcomes, clinical safety, and quality of care while managing costs.

"We are working to help healthcare providers improve the quality and delivery of healthcare by improving clinical workflow and access to evidence-based information at the point of care," said Robert Cullen, president and chief executive officer, Thomson Scientific & Healthcare. "With industry leading technology from MercuryMD and trusted evidence-based knowledge from Micromedex, Thomson will create powerful applications that connect healthcare professionals to the tools they need to make critical decisions."

"Thomson is an exceptional organization that shares our passion for innovation, with the ultimate goal of creating products that help our customers improve the outcomes and quality of healthcare," said Alan Ying, chief executive officer and co-founder of MercuryMD. "As part of Thomson, we will accelerate the global delivery of next-generation mobile information systems to more than 3,400 hospitals in North America and 7,000 institutions worldwide, something that we could not achieve independently."

"Leading challenges facing healthcare providers include improving patient safety and quality of care," said Jeff Reihl, executive vice president, Thomson Micromedex. "The joining of MercuryMD and Micromedex will create a seamless solution that promotes the adoption of evidence-based treatment protocols and minimizes the risk of medical errors."

The Thomson Corporation

The Thomson Corporation (www.thomson.com), with 2005 revenues of approximately $8.5 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools and applications to more than 20 million users in the fields of law, tax, accounting, financial services, higher education, reference information, corporate e-learning and assessment, scientific research and healthcare. With operational headquarters in Stamford, Conn., Thomson has approximately 40,500 employees and provides services in approximately 130 countries. The Corporation's common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; Toronto: TOC).

About MercuryMD

MercuryMD provides healthcare providers with mobile solutions to improve clinical workflows and operational efficiencies. It offers hospitals and physicians a technology foundation to provide access to current and comprehensive clinical information in addition to a full suite of enterprise applications that enable clinicians to transform information into action. By providing access to patient information where and when it is needed via PDAs, smartphones and other Web-enabled devices, the MData(R) Enterprise from MercuryMD helps hospitals ensure that their clinicians have the right information to make the right decisions regarding their patients' care. MData delivers the most comprehensive patient information of any mobile solution available today and works on Palm(R), blackberry, Pocket PC and Windows Mobile(TM) devices. For more information, visit www.mercurymd.com.

SOURCE  The Thomson Corporation
    -0-                             06/01/2006
    /CONTACT:  Angela Jenkins of Thomson Micromedex, +1-303-486-6531,
angela.jenkins@thomson.com; Kyle Christensen of Thomson Healthcare,
+1-201-358-2219, kyle.christensen@thomson.com; Frank Golden of The
Thomson Corporation, +1-203-539-8470, frank.golden@thomson.com/
    /Web site:  http://www.thomson.com
                http://www.mercurymd.com /
    (TOC TOC.)

CO:  Thomson Corporation; MercuryMD, Inc.; Micromedex
ST:  Connecticut, North Carolina
IN:  HEA CPR STW
SU:  TNM

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8292 06/01/2006 12:22 EDT http://www.prnewswire.com