You did bring up some really valid points. I go today for the shingles vacine. I am terrified of that as some of my neighbors have it. I am going to ask alot of questions before I get this vacine. I am indeed a bit worried about it, as I don't want to "get" the disease from the shot. I don't want to mess up my immune system eithor. As you said we already have enough to worry about. thank you for the information, look out health dept....I have questions....ginnie