i've read splendid solution, about the development of the polio vaccine. fascinating! ok, not really a "should i or shouldn't i vaccinate" book, but so, so informative. i really rank it as a must read.
i've read the vaccine book by dr. sears (thought it was the worst vaccine book i've read)
read autism's false prophets by dr. offit (loved it).
my approach to researching vaccines was to go claim by claim though. so, i read (here) that vaccines cause SIDS. i used google scholar and pub med to look for the evidence for and against. any time you're relying on someone else to distill the information for you, you're basically just taking their word for it unless you check their resources yourself. it's hard. it took me YEARS. but, i feel far more informed than the passive consumer of someone's else's opinion.
good luck! it's a lot of work to develop a truly informed opinion, but i think it's totally worth it.
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