I just wanted to point out that my cat's reaction did not occur until after a few days, it does not have to be immediate.
I think your decision will depend on legal requirements and rabies status where you live. I didn't have to worry about rabies, as it's extremely rare in the UK (may or may...
Vaccines in indoor cats can be a controversial topic. As you see, a lot of people have strong opinions either way.
I can only say what happened in my case:
I have 2 indoor-only cats. The DSH was vaccinated when he was under 1 year old and he was fine. The other cat is a large fluffy boy roughly...
Feel free to be as dramatic as you need to be, we're all familiar with the emotions that come with having a sick furbaby :)
4 days sounds about right for responding to Metro, see what your vet says about giving it again.