One of the oldest antivaccine tropes that first encountered is one that I like to call the “toxins gambit.” Basically, this is an antivaccine lie that portrays vaccines as being laden with all manner of “toxins” because they have—gasp!—chemicals with scary sounding names and even some chemicals that are toxic. The lie derives from the the famous adage that the “dose makes the poison.” For instance, it’s well known that there are traces of formaldehyde in some vaccines left over from the production process. Sounds scary, right? Certainly our old buddy the antivaccine-sympathetic pediatrician…