Massive dengue vaccine rollout under the microscope: 800,000 recipients analyzed

NCT ID NCT07501793

Ongoing Knowledge-focused Sponsor: Tam Anh Research Institute Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study reviews the records of up to 800,000 people who received the TAK-003 (Qdenga) dengue vaccine at VNVC centers in Vietnam between September 2024 and September 2025. Researchers will look at age, sex, location, and vaccination history to see who got the vaccine and how. No new tests or contact with participants is involved—only existing data is used.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: TAK-003 (Qdenga) dengue vaccine
What this could lead to: If successful, this study could help public health officials understand who is getting the dengue vaccine and how to improve vaccination campaigns in Vietnam.
What could go wrong: This is an observational study using existing records, so it cannot prove the vaccine's effectiveness or safety. It only describes who got vaccinated, not why or what happened afterward.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

dengue disease prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ALL INDIVIDUALS WHO HAVE RECEIVED AT LEAST ONE DOSE OF TAK-003 (QDENGA) DENGUE VACCINE DENGUE

Contacts and locations

Locations

Vietnam Vaccine Joint Stock Company

Ho Chi Minh City, Ho Chi Minh, 700000, Vietnam

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