Working closely with our own Clinical Epidemiology Research Center, SOUSEIKAI has contributed to the prevention of infectious diseases in Japan and worldwide by conducting quality vaccine studies for global pharma and innovative biotech companies. We also have led the National Emerging and Reemerging Infectious Disease Research Project with the Japanese government. Vaccine study experience: seasonal flu, novel influenza, IPV, varicella, HBV, zoster, SA4Ag, CMV, RSV, CD, Pneumococcal Vaccine, Chickenpox, etc. Subjects: healthy young male/female, minor, elderly populations, immunocompromised patients. Highlights: 1,500 healthy young and 600 elderly subjects in one study, 5 locations, Cartagena Protocols, 34-year experience.