About WhichVax

Why this exists

WhichVax was built by a frequent traveller who got tired of spending hours cross-referencing WHO pages, CDC PDFs, and outdated travel forums just to answer one simple question: which vaccines do I actually need?

Getting clear travel vaccine information used to be maddening. You'd search for a destination, find an NHS page that told you to see your GP, a CDC PDF that was 300 pages long, and a private clinic website that wanted your email address before showing you anything. The actual answer was never just there.

The information isn't secret. WHO and CDC publish it — the same sources travel clinics use. It just isn't in a format that's useful when you're planning a trip. WhichVax gives you a clear starting point so you can book your appointments with confidence and know exactly what to ask.

What it does

Search any of 200+ destinations and get a straightforward breakdown: vaccines that are legally required for entry, vaccines that are recommended because of genuine disease risk, the main health concerns in that country, and rough cost estimates based on typical EU, UK, and US private clinic pricing. No fluff, no upselling, no booking required.

Beyond the country lookup there's a multi-trip planner for people visiting several countries in one trip — it combines vaccine lists and removes duplicates so you can see everything you need in one view. There's also a vaccine history tool that estimates which routine childhood vaccines you've probably had based on your birth year and country, which is useful if you've lost your records. And a blog covering travel health topics that don't fit into a country page.

What it isn't

Medical advice. The information here is a starting point — a way to understand what you're likely to need before you speak to a travel health clinician. It's not personalised to your health history, your medications, or the specific villages you're visiting. A travel clinic appointment is still the right move for any trip to a high-risk destination, and nothing on this site should replace that.

Vaccine requirements also change. An outbreak can shift recommendations overnight. Always verify current requirements with a clinician or authoritative source before you fly.

Where the data comes from

All vaccine recommendations are based on WHO International Travel and Health guidelines and CDC Yellow Book guidance. Disease risk profiles draw on the same sources. Cost estimates are approximate ranges from EU, UK, and US private travel clinics — actual prices vary by provider and location. The site is reviewed and updated regularly, but is not a substitute for real-time clinical guidance.

Editorial standards

WhichVax is an informational reference tool built on WHO and CDC guidance — the same primary sources used by travel clinics worldwide. Country pages cover vaccine entry requirements, WHO and CDC recommendations, disease risks, and cost estimates. All data is cross-referenced against both WHO International Travel and Health and the CDC Yellow Book before publication. Where guidelines differ between sources, both are noted.

Country pages are reviewed and updated weekly against current WHO and CDC publications. The outbreak map is updated based on WHO Disease Outbreak News and CDC Travel Health Notices, typically within 24-48 hours of significant developments. Every page carries a medical disclaimer directing visitors to consult a qualified travel health clinician before departure — WhichVax is a starting point, not a substitute for professional advice.