Adimmune Corporation (4142:TT), founded in 1965 and headquartered in Taichung, Taiwan, develops, manufactures, and distributes vaccines and biological products primarily in Taiwan, the United States, China, and international markets including Southeast Asia and Brazil. The company produces AdimFlu-S quadrivalent influenza vaccine, trivalent influenza vaccines, Influenza A (H1N1) Virus Monovalent Vaccine, Japanese encephalitis vaccines, tetanus toxoid alum precipitated for tetanus prevention, purified Tuberculin, and offers contract development and manufacturing organization (CDMO) services using egg-based and cell-culture platforms at PIC/S GMP-certified facilities with annual capacity for tens of millions of doses; its subsidiary Enimmune Corp. (6564:TT) markets EnVAX-A71 enterovirus 71 vaccine. Adimmune operates in the biotechnology sector serving government programs, pharmaceutical partners, and global health organizations. In recent developments, Adimmune received ANVISA GMP certification for its Tanzi plant in August 2025 advancing Brazilian regulatory approval for influenza vaccines, installed a third automated aseptic filling line adding 4 million doses annual capacity for customized CDMO in 2025, passed EMA and ANVISA inspections in H1 2025, signed SMTA2 with WHO in May 2024 for pandemic influenza strain access, resumed tetanus vaccine production targeting Southeast Asia and China exports, and expanded Enimmune's EV71 vaccine filings in Macau, Vietnam, and Thailand while scaling cell culture production to 1,000 liters. The company previously secured EMA GMP certifications, extended Sanofi Pasteur partnership to 2027, and achieved AdimFlu-S approvals in China and Thailand.