The provided text is excerpted from a book titled Vax-Unvax: Let the Science Speak, authored by Robert F. Kennedy Jr. and Dr. Brian Hooker. The book presents a compilation of studies comparing the health outcomes of vaccinated versus unvaccinated children. It argues that unvaccinated children are healthier and suffer fewer chronic illnesses. The authors cite numerous studies, including those published in peer-reviewed journals and other sources, to support their claims. The book also addresses concerns about specific vaccine components, like thimerosal, and analyzes the safety of various vaccines, including COVID-19 vaccines. Finally, it criticizes the lack of long-term safety studies on vaccines and alleges conflicts of interest within regulatory agencies.