Yahoo Finance·2025-11-20 14:45Core Insights - Merck has faced challenges leading to a decline in share price, with potential future issues including the loss of patent exclusivity for Keytruda in about two years [1] - The company announced the acquisition of Cidara Therapeutics for approximately $9.2 billion, aiming to enhance its portfolio with promising drug candidates [2] Group 1: Acquisition Details - Merck's acquisition of Cidara Therapeutics is a strategic move to access promising mid- to late-stage drug candidates, which is often more efficient than developing new products in-house [2] - Cidara's leading asset, CD388, is a potential long-acting antiviral drug designed to provide protection against the flu, addressing several issues with current vaccines [3][4] Group 2: CD388's Potential - CD388 targets the two main influenza types and aims to provide protection throughout the flu season, particularly for vulnerable populations such as the elderly and immunocompromised [5] - Clinical trials for CD388 have shown statistically significant protection against the flu compared to a placebo, indicating its potential effectiveness [6][7]