Oh my gosh!! How did you find out about that? I have had two pregnancies with a total of 4 shots!! That infuriates me that they didn't tell me it contained mercury!! I am literally ate up with Mercury and I am only 27 years old!!! I have 14 almagam fillings, gotten 2 flu shots(which I was told contain mercury, if I would have known then I would have never gotten it) and 4 Rhogam shots!! What a crime for mother's to be told they need this shot without prior knowledge of mercury being shot through their child's innocent body!! I'm so upset about this!! Thanks for letting me know about this. If I get pregnant again I will get a midwife next time. You can't trust Dr's these days!! No wonder I feel so tired all the time!! Please pass this on to everyone you know who is RH negative.