Update on Phase II/III Clinical Trial of Investigational Staphylococcus aureus Vaccine, V710

WHITEHOUSE STATION, N.J., and VIENNA, April 11, 2011 /PRNewswire/ -- Merck (NYSE: MRK), known as MSD outside the United States and Canada, and Intercell AG (VSE: ICLL) today announced that following a pre-specified interim analysis from the Phase II/III clinical trial evaluating V710, an investigational vaccine for the prevention of Staphylococcus aureus (S. aureus) infection, the independent Data Monitoring Committee (DMC) recommended suspension of enrollment. Although the trial did not meet the pre-specified futility criteria, the DMC nonetheless recommended suspension of enrollment pending further analyses of the benefit/risk profile of the vaccine candidate. Merck and Intercell plan to provide a further update when analyses have been completed.

About S. aureus

S. aureus is a leading cause of hospital-acquired infections. In addition to bloodstream infections with a mortality rate of up to 35 percent, infections of bone, heart and other inner organs can often lead to serious health complications and death. Today, approximately 50 percent of S. aureus strains isolated in hospitals worldwide are resistant to multiple antibiotics, rendering staphylococcal disease management increasingly difficult and challenging.

This communication expressly or implicitly contains certain forward-looking statements concerning Intercell AG and its business, including words such as "could," "should," "may," "expects," "anticipates," "believes," "intends," "estimates," or similar words. Such statements involve certain known and unknown risks, uncertainties and other factors which could cause the actual results, financial condition, performance or achievements of Intercell AG to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Intercell AG is providing this communication as of this date and does not undertake to update any forward-looking statements contained herein as a result of new information, future events or otherwise.

Merck Forward-Looking Statement

This news release includes "forward-looking statements" within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Such statements may include, but are not limited to, statements about the benefits of the merger between Merck and Schering-Plough, including future financial and operating results, the combined company's plans, objectives, expectations and intentions and other statements that are not historical facts. Such statements are based upon the current beliefs and expectations of Merck's management and are subject to significant risks and uncertainties. Actual results may differ from those set forth in the forward-looking statements.

The following factors, among others, could cause actual results to differ from those set forth in the forward-looking statements: the possibility that the expected synergies from the merger of Merck and Schering-Plough will not be realized, or will not be realized within the expected time period; the impact of pharmaceutical industry regulation and health care legislation; the risk that the businesses will not be integrated successfully; disruption from the merger making it more difficult to maintain business and operational relationships; Merck's ability to accurately predict future market conditions; dependence on the effectiveness of Merck's patents and other protections for innovative products; the risk of new and changing regulation and health policies in the United States and internationally and the exposure to litigation and/or regulatory actions.

Merck undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in Merck's 2010 Annual Report on Form 10-K and the company's other filings with the Securities and Exchange Commission (SEC) available at the SEC's Internet site (www.sec.gov).

SOURCE Intercell AG

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