Rant about vaccinations

So when I told my sister that I was pregnant she started going crazy and pushing "don't vaccinate tour children" etc. And she sends me really long texts and stays on the phone with me for half an hour telling my why I shouldn't. It's irritating, thanks for giving me that option but now it's not an option your pushing me into it, telling me not to ruin my children's lives, how my niece is never sick and blag blah blah. Well good for you, I'm glad that she doesn't get sick and I agree I don't need all of them, like the flu shot, everytime I get the flu shot I get sick more time a year that I do without it. Only one that I don't get when I need my shots, but I don't know I'm just annoyed by it and I'm going to be giving my children vaccinations, and I don't know how to tell my sister because she's the type of person to get all irratated about it and think Im being selfish, and go on a two hour long rant. I don't believe all the stupid shit that people say "vaccinations give your kids down syndrome" um you do realize it doesn't work that way right? Anyways I just needed to vent about how irratated I am by this and I just feel like I can't tell my sister my feelings because of how she'll be.