Agreed. In context of the "unvaccinated person cooing at your baby scare story" any infected person could spread the disease.
It wasn't a 'scare story', it was to show that someone infected with measles is MUCH less obvious than someone blowing fag smoke in your infants face. And yes, any infected person could spread the disease, but the infected person is MUCH less likely to have been vaccinated.
I agree with pp who said aggression and mockery, while I understand the strong feeling, is probably not a good idea.
Well, yes, I agree, but I've had it with them. I suppose if it was someone I actually knew, I'd try and have a calm, rational, polite conversation. But their fears are, on balance, irrational if most people are not immunised (because the risk of damage/death from one of these illnesses will be much, much higher than the risk of damage from any of the vaccines), and their attitude is selfish if most people are immunised (because they are shifting the limited risk onto everybody else by relying on herd immunity, while being happy for their child to be at risk of passing an infection to someone whose defences against it are limited).
Possibly if I'd seen less of the ill-effects of these diseases, I might be more sanguine. But I have seen them, so I'm not.