Active — Not RecruitingNot Applicable

Demographic Characteristics of TAK-003 Dengue Vaccine Recipients in Vietnam

Vietnam800,000 participantsStarted 2026-03-16

Plain-language summary

The study aims to retrospectively describe the demographic characteristics, comorbidity profiles, vaccination history and vaccination patterns of all individuals who have received at least one dose of TAK-003 (Qdenga) dengue vaccine at all VNVC centers between September 26, 2024 and September 30, 2025. The study will utilize existing data from the VNVC immunization database. No new data collection or direct participant contact will occur.

Who can participate

Age range4 Years

SexALL

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Inclusion Criteria: * All individuals who were vaccinated with at least one dose of TAK-003 at all VNVC vaccination centers in Vietnam from 26/09/2024 to 30/09/2025 Exclusion Criteria: * Cases in which TAK-003 vaccination occurred outside the defined study period (from September 26, 2024, to September 30, 2025). * Records that are duplicates, missing or contain inconsistent information on key demographic or clinical characteristics (age, sex, TAK-003 dose \[first or second\]) as such data are essential for analysis

What they're measuring

Vaccination Coverage - First Dose

Timeframe: Day 0 after recruitment

Vaccination Coverage - Second Dose

Timeframe: Day 0 after recruitment

Trial details

NCT IDNCT07501793

SponsorTam Anh Research Institute

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2026-04-30

View on ClinicalTrials.gov More Dengue trials