Flu Vaccination Timing Calculator
Choose a target group or enter your first-dose date to get the free-shot start date and recommended second-dose date.
⚠️ Reference tool · Not medical advice
This tool summarizes the KDCA National Immunization Program (NIP) public criteria and is for reference only — not medical advice. Always confirm eligibility, schedule, and contraindications with a medical provider or the KDCA immunization helper (nip.kdca.go.kr).
👥 Target group
💉 Prior flu shots received
Children under 9 getting their first flu shot, or who have had only one dose so far, need two doses spaced 4 weeks (28 days) apart.
🗓️ First dose status
🍂 Season
The free-shot schedule for this season has not yet been announced by the KDCA, so prior-year dates are applied tentatively. It will be updated after the official announcement.
📋 Vaccination schedule
Free-shot start date
2026년 9월 22일 (화)
Recommended first dose
2026년 9월 22일 (화)
Recommended second dose
4 weeks (28 days) after the first dose
2026년 10월 20일 (화)
Recommended completion before season
2 weeks for antibodies + before peak season (late November)
2026년 11월 16일 (월)
Until free-shot start
72days left
Until completion deadline
127days left
Confirm exact free-shot eligibility and dates with the KDCA immunization helper (nip.kdca.go.kr) or a public health center / designated clinic.
Suitability based on underlying conditions, allergies, or pregnancy must be decided after consulting a doctor. This tool does not replace medical diagnosis or prescription.
Data sources · verification
Verified: 2026-06-20- 🏛️ KDCA National Immunization Program (NIP) — influenza, nip.kdca.go.kr
- 💉 Two-dose 4-week (1-month) interval for children under 9 — KDCA immunization helper
The free-shot schedule is announced each season (Sep–Oct) by the KDCA and updated after release.
Last updated 2026-06-20 · About
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