800,000 dengue vaccine recipients studied in vietnam
Knowledge-focused
Ongoing
This study looks at the health records of up to 800,000 people who received the TAK-003 (Qdenga) dengue vaccine at VNVC centers in Vietnam. Researchers want to describe who got the vaccine, including their age, sex, and where they live. No new tests or visits are needed—only exis…
Sponsor: Tam Anh Research Institute • Aim: Knowledge-focused
Last updated May 17, 2026 03:29 UTC