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Why it matters

Vaccine facts, travel alerts and trusted health advice

Stay informed with evidence-based vaccine information, travel health alerts and guidance from trusted health authorities.

Updated 26 September 2026Sources: CDC Travelers' Health, NaTHNaC, WHO
Why it matters

The evidence behind vaccination

Global figures from the world's health authorities — every number links to its source.

154 million
lives saved by vaccines over the past 50 years — about 3 million a year.
WHO / The Lancet, 2024
60%
of those lives saved were thanks to the measles vaccine alone (≈94 million people).
WHO / The Lancet, 2024
40%
fall in global infant deaths over 50 years, driven largely by vaccination.
WHO / The Lancet, 2024
4–5 million
deaths are prevented every single year by immunisation worldwide.
World Health Organization
1 million+
cervical-cancer deaths projected to be averted, with 86 million girls protected.
Gavi, the Vaccine Alliance
~36%
lower risk of needing care for flu among people who got the flu vaccine.
US data, this season. UK effectiveness varies year to year (UKHSA).
CDC VISION network, 2025–26

These are global, population-level figures for general awareness — not a prediction of any individual's outcome. Always speak to a clinician about what's right for you.

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