In it he puts forward the claim that there is a vast conspiracy among the pharmaceutical industry, the government (via the FDA and CDC) and the medical establishment to hide the evidence that thimerosal in vaccines causes autism. He has subsequently built his career around that book, and clings tenaciously to the thimerosal claim. He blogs for The Huffington Post, where he repeats his anti-vaccine propaganda on a regular basis. Kirby is most notorious for specifically claiming that autism rates should plummet following the removal of thimerosal from the vaccine schedule, and then subsequently moving the goalpost on his prediction.