Take Alex Jones and any other conspiracy out of the picture. Take what the medical experts say out of the picture. Now what you have is the real world to look at.
Read about the human body and how it functions. Read about the myelin sheath coating the nerve fibers of the brain. What causes it to cease forming? What causes it to grow too thick? How does the body respond to foreign substances injected vs. inhaled or injested? Why do some get infectious diseases while others in the same room don't? What is/are the variables?
You can also do the same as with the WTS - follow the money trail. What do vaccine manufacturers have to gain? To lose? What do anti-vaccine promotors have to gain? To lose? What do the vaccine manufacturers have to gain by refuting the mercury/autism link? What do they have to lose? What do doctors have to gain? To lose?
Now look around you. Do you know people who have children with autism? Have you questioned them? Asked them their experience? Asked them how their children were prior to vaccination? After vaccination? Parents KNOW their children better than anyone else. They know when something is not right. Real world examples are the best source to get information from. Studies can be skewed for or against anything.
This is a very personal decision for all involved. It is also a very intense and controversial topic. This comment is not intended to sway people one way or another. Just some helpful suggestions for research. ASK QUESTIONS and observe and listen to other parents around you whose interest is their child's health. Their story can be a whole lot different than any study will ever show. One side of the story never tells the whole scenario.