4. Vaccines cause many harmful side effects, illnesses, and even death - not to mention possible long-term effects we don't even know about.
Vaccines are actually very safe, despite implications to the contrary in many anti-vaccine publications (which sometimes contain the number of reports received by VAERS, and allow the reader to infer that all of them represent genuine vaccine side-effects). Most vaccine adverse events are minor and temporary, such as a sore arm or mild fever. These can often be controlled by taking acetaminophen before or after vaccination. More serious adverse events occur rarely (on the order of one per thousands to one per millions of doses), and some are so rare that risk cannot be accurately assessed. As for vaccines causing death, again so few deaths can plausibly be attributed to vaccines that it is hard to assess the risk statistically. Of all deaths reported to VAERS between 1990 and 1992, only one is believed to be even possibly associated with a vaccine. Each death reported to VAERS is thoroughly examined to ensure that it is not related to a new vaccine-related problem, but little or no evidence suggests that vaccines have contributed to any of the reported deaths. The Institute of Medicine in its 1994 report states that the risk of death from vaccines is "extraordinarily low."