My story is that I have no natural immunity to CP despite having had it badly 3 times now. I also have a DS that is very immunocompromised due to steroid medication for chronic asthma.
I was 17 weeks pregnant, so well into my second trimester, when supposedly CP isn't as great a risk.
I went shopping. Someone had two toddlers with obviously active and infectious CP in their trolley.
I did my best to avoid them, but it seemed like every part of the store I went to, they were there.
I caught CP.
My unborn baby died just two weeks after that brief contact with someone who couldn't be bothered to shop online or get a friend or family member to shop for her.
And the day after that, my immunocompromised DS2 caught CP. He was rushed to hospital as he developed encephalitis as a complication of CP, and nearly died.
He already had development delay, but he regressed after this. At 9yo, he is like a 6yo. He also lost part of his hearing in one ear too, as a complication of the CP.
So in my eyes, taking an obviously infectious DC out in public is nothing but selfish.
And I believe that many people underestimate the risks of CP, and the level of contagiousness.
As mentioned upthread, 90% of non-immune people will catch CP after just 15 mins breathing the same air as an infectious person.
Those who have had CP more than once, and still have no immunity to it will not be helped by the vaccination either, as if the 'proper' disease didn't produce the correct immune response, the vaccination won't either.
Believe me, I have asked numerous medical professionals on that.
So it IS utterly selfish to do that.
And just because a woman isn't in the first trimester, it DOESN'T mean that they won't have a SB or MC, it just means that it is statistically less likely. But I can assure you that I didn't give two fucking craps about 'statistics' when it happened to me...