Butantan Institute

This study tests a dengue vaccine in healthy adults aged 60 to 79 and compares their immune response to that of adults aged 40 to 59. The goal is to see if the vaccine works as well and is as safe in older adults. About 997 participants will receive one dose and be followed for s…

This study tests a new vaccine designed to protect against the H5N8 bird flu virus. Researchers want to see if it is safe and triggers a strong immune response in 700 healthy adults and older adults. The vaccine is made from inactivated, fragmented virus with an adjuvant to boost…