EMERYVILLE, Calif.--(BUSINESS WIRE)--April 5, 2006--Chiron Corporation (NASDAQ:CHIR - News) today announced that three independent proxy advisory firms, Institutional Shareholder Services, Proxy Governance, and Glass Lewis & Co., have recommended that Chiron shareholders vote in favor of the company’s amended merger agreement with Novartis AG (NYSE:NVS - News). As announced on April 3, Novartis has increased to $48.00 per Chiron share the price it will pay for the approximately 56 percent of Chiron shares that Novartis does not already own. The merger will require a majority of outstanding shares as of the record date to be voted in favor of the transaction.