Icosavax, Inc. operates as a biopharmaceutical firm dedicated to developing... Icosavax, Inc. operates as a biopharmaceutical firm dedicated to developing immunizations against infectious diseases. Leveraging its proprietary virus-like particle (VLP) platform technology, the company primarily focuses its efforts on severe respiratory illnesses. Its developmental portfolio includes several key vaccine candidates: IVX-121, an RSV-targeted vaccine currently undergoing Phase 1/1b clinical trials; IVX-A12, a bivalent candidate designed to target both respiratory syncytial virus (RSV) and human metapneumovirus (hMPV); IVX-241, a candidate specifically designed for hMPV; and IVX-411, a SARS-CoV-2 vaccine based on a receptor binding domain (RBD) sequence antigen, which is also in Phase 1/2 clinical trials. Established in 2017, Icosavax maintains its corporate headquarters in Seattle, Washington.