Core Insights - Merck has agreed to acquire Cidara Therapeutics for $9.2 billion, significantly boosting Cidara's stock value by approximately 110% to $221.50 per share [1][2] - Cidara's CD388 flu prevention program is viewed as a promising opportunity, with an estimated market potential of $3.8 billion, especially following the announcement of a registrational phase III program [2] Company Developments - Cidara Therapeutics' stock surged nearly 105% to $217.05 in morning trades following the acquisition announcement [2] - Merck's stock experienced a slight decline, falling to $92.83 [2] Market Context - The acquisition reflects a strategic move by Merck to enhance its portfolio in the biotech sector, particularly in antiviral treatments [1][2]