If you are uneasy about why, how much, is this safe, etc., maybe you should consider taking the time to actually read the book that you are going to...
Actually, the current flu shot contains a substantial amount of mercury (even the "preservative free" has some mercury)- MANY times more mercury than...
Good luck to everyone giving this a try this week! I'm a little baffled by the people who find this ridiculous, think there are WAY too many "tater"...