I saw today on news:
''Maybe in future we will travel in EU only with an vaccine certificate''

Righttt.

Can I buy a fake vaccine certificate?
If not, can I make one?

carrion4worm - flu got a new strain every year, Covid is not that clever, but in theory you're right.
Don't forget the vaccines produced in UK, for measles, they used human fetuses ADN/DNA, after that they got a lot of kids with autism.

Is fun doing vaccines, at least in a box of chocolate I know what I get.