How soon does immunity develop after the Typhim Vi typhoid vaccine, and how long does it last?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Immunity after Typhim Vi develops within 1–3 weeks after injection and lasts around 3 years.

TYPHIM Vi Solution for InjectionSANOFI · emc · SmPC §5.1 Pharmacodynamic properties · Version 20Document updated 24 February 2025

Sources checked 8 November 2026

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typhoid vaccine · Medicine question

iatroX medicinesPublished 8 November 2026

The answer

Immunity after Typhim Vi develops within 1–3 weeks after injection and lasts around 3 years.

TYPHIM Vi Solution for InjectionSANOFI · emc · SmPC §5.1 Pharmacodynamic properties · Version 20Document updated 24 February 2025

Sources checked 8 November 2026

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