When doctors recommend the flu shot patients are 50 times more likely to take it. We need studies to prove that the flu shot is safer than not taking it...they don't exist. The rate of spontaneous abortions is an issue that is not worked out. Mercury is concentrated 15 times in the baby's blood stream over that which is in the mother; this is not a safe practice. The vaccine induces the immune system to produce antibodies, not cellular immune protection; this raises further questions about the effectiveness of the vaccine.