Prevents

Dengue fever

Dosing schedules

Standard 2-dose schedule (from 4 years)

For: Preschool children (4–6 years)

Dose	Age	Minimum interval from previous dose
Dose 1 (Qdenga)	4 years	–
Dose 2 (Qdenga)	4.2 years	90 days

For children aged 4 years and over and adults

Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 06/10/2026.

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Special precautions

Indicated from 4 years of age: 2 doses 3 months apart. Do NOT give on the same day as other live vaccines (they must be 28 days apart).

Contraindications and deferrals

Contraindication Pregnancy or breastfeeding
Absolute contraindication because this is a live attenuated vaccine.
Contraindication Severe congenital or acquired immunodeficiency (HIV, ongoing chemotherapy)
Absolute contraindication to live attenuated vaccines.

Reactions after vaccination and what to do

Pain at the injection site, headache, muscle aches, mild fever Common

Onset: Within 1–3 days after vaccination · Lasts: 1–2 days

Home care: Rest, drink plenty of fluids, take paracetamol for fever and pain. Avoid aspirin and ibuprofen.

Go to a health facility immediately if: Persistent high fever, bleeding gums or nosebleeds, severe abdominal pain, difficulty breathing, continuous vomiting.

Giving with other vaccines

MMR II: should not be given on the same day; if given on different days, allow at least 28 days between them. The Qdenga dengue vaccine is a SPECIAL exception: it must NOT be given on the same day as any other live vaccine (such as MMR or chickenpox); the two must be at least 28 days apart.

Pregnancy and breastfeeding

CONTRAINDICATED in breastfeeding women