A corrupt doctor did horrible things to vulnerable child patients (e.g. dangerous colonoscopies without proper consent) in order to make a B.S. article claiming the MMR vaccine causes autism, all to help a friend sell an alternative—separate Mumps, Measles, and Rubella vaccines—and make a shitload of money. It backfired, he lost his medical license and accidentally convinced half the U.S. that all vaccines are evil.

All vaccine/ autism pseudoscience that saw prominence starting in the 90's based on one fraudulent paper written by a guy who claimed to be a doctor but was just straight up abusing kids to back up his claims and to sell his own product which was just MMR vaccine delivered in three seperate shots. Product developed before fraudulent paper.