In reply to Bruce Hooker:
> But you would have to be in the French health insurance system and have a "Carte Vitale". I think the way to go is using the EHIC system, pay the doctor, 23€ being a minimum, most doctors in the Paris region charge extra, he would give you the prescription ("Ordonnonce") to get the injection from the chemists then you could either pay a nurse to do it (cheaper than going back to the doctor), ask the chemist, sometimes they will do jabs, do it yourself (that's what I do for certain easy jabs) or, better still, negotiate with the doctor for him to do it without a second 23€ charge. Health care is an expensive business in France!
No need for a carte vitale if he has his EHIC. He can send the prescription stickers and his treatment sheet to the local CPAM with his bank details and get reimbursed at around 70%.
I never used the EHIC system in France so I don't know how well it works, but by the look of it it looks like the paperwork to be reimbursed is a lot less complicated than if you are actually an French person living in France !
Post edited at 13:50