How does Adam Ringham address the controversy surrounding vaccine efficacy in his publications?

Based on the available content, Adam Ringham's book "I'm in your vaccines" seems to question the information provided by pharmaceutical companies and the CDC about vaccines. He encourages parents to do their own research and ask questions. However, it's important to note that the book is not a scientific or medical resource, but rather a perspective from a parent.

Would you like to know more about the specific points he raises in his book or his general stance on vaccines?