If you were born in France, you might not meet the American requirements concerning vaccinations. You might not have been given a specific vaccination or were administered the vaccination only once instead of the two times required.

Be carefull to make sure your vaccinations are satisfactorily up to date well in advance, as you might not be able to get several shots done at once and it might be necessary to wait 3 weeks in between shots. You will get a detailed list of which vaccinations you will need to have had according to your age.