How long is a yellow fever vaccine valid for?

Bro, my college friend just went abroad and he said his yellow fever vaccine was valid for life. He got it years ago. But yeah, better ask the doctor who gave it or check the certificate, just to be safe. Don't wanna get stuck anywhere.

Yaar, actually pehle it used to be 10 years, but now they say it's for life. My doc told me this when I got mine for a trip to Africa. But still, official documents pe check kar lena. Sometimes rules change, you know.

Honestly, even if it says 'lifetime', some countries might have specific entry requirements that ask for a recent one. I had an issue once because I didn't check properly. Please talk to a travel doctor; they know all the current guidelines and can give you proper advice.

I totally get why you're asking this, it can be confusing with all the different vaccine schedules. From what I remember, the WHO actually updated it to say the yellow fever vaccine offers lifelong protection. But for specific travel, always confirm with a health professional, just to be absolutely sure and avoid any last-minute stress.