Upvote:0
The World Health Organization's website has a PDF summarizing what each country requires in terms of yellow fever vaccinations: https://www.who.int/ith/ITH_country_list.pdf
According to that PDF, France and Spain do not require (as of 2013) a proof of vaccination:
Compare France and Spain with a different country that, like France and Spain, is not considered to be a place where people are at risk of getting yellow fever, but they do state clearly that anyone arriving from a country with risk is required to have a vaccination:
I would still recommend to get a second vaccination (therefore replacing your lost certificate), or a vaccination waiver if possible, because airport staff might not know the contents of the PDF below, and even if they do, they might not necessarily follow it.
Whether or not airport staff would accept an affidavit swearing in the presence of a Commisioner of Oaths that you have a valid vaccination, remains an open question it seems.
Upvote:5
CDC suggests booster vaccines every ten years. Given this, and the fact that CDC doesn't mention avoiding multiple shots, I'd go to a doctor, present the case, and simply ask for a second dose and a new certificate. That is probably the quickest and most efficient way of solving this.
Inform the doctor that you have the vaccine previously, how long ago it was, and that you lost your certificate.