usually formaldehyde. Dead pieces of disease-causing microorganisms (usually bacteria) are put into the vaccine. Because the antigens are dead, the strength of these vaccines tends to wear off over time, resulting in less long-lasting immunity. So, multiple doses of inactivated...
I was a bit naive. My reporting, which found very few autistic Amish and a much lower vaccination rate than the country as a whole, raised the specter of a link between vaccinations and autism, a link that was starting to get some traction as the autism rate inexplicably exploded in Ameri...