In his book, “Autism's False Prophets,” Paul A. Offit, a national expert on vaccines, recounts the history of autism and challenges the idea that vaccines lead to autism. An excerpt.

From the prologue:
Although most of my hate mail mentions my work with Merck on a rotavirus vaccine, that alone  doesn’t explain why some people hate me. A lot of people work with pharmaceutical companies and don’t get hate mail. I suspect that if I had simply continued my career in research and stayed out of the public’s view, I would have escaped notice. But a series of events at our hospital in the early 1990s led to what some perceive as my second crime.

In 1991, a measles epidemic swept through Philadelphia. The outbreak centered on a religious group in the city that chose not to vaccinate its children. Seven children in that group died of measles, three in our hospital. Then the virus spread to the surrounding community, killing two more children, both of whom were too young to have gotten the measles vaccine. Because modern medicine is often incapable of preventing diseases, it’s enormously frustrating. But the measles vaccine has been around for more than thirty years. It works and it’s safe. Still, these parents had chosen not to protect their children.

During the next ten years, I saw several children come into our hospital with pneumonia caused by whooping cough, or severe skin infections caused by chickenpox, or meningitis caused by the bacterium Haemophilus influenzae type b (Hib), because their parents had chosen not to vaccinate them. When I asked why they had made that choice, they said vaccines were too dangerous: the whooping cough vaccine caused brain damage, the chickenpox vaccine caused paralysis, and the Hib vaccine caused diabetes. They had gotten their information from reports on television or the radio, from articles in newspapers and magazines, or, most commonly, from the Internet. So, in October 2000, we started the Vaccine Education Center at the Children’s Hospital of Philadelphia, hoping to counter this misinformation. Within a couple of years, I was frequently quoted by the media trying to reassure parents that their concerns about vaccines were often ill-founded or had been disproved.

Although I received some hate mail for these efforts at reassurance, nothing matched what happened after the media started to carry the story that vaccines caused autism. Since the late 1990s, many studies have shown that the rates of autism are the same in vaccinated and unvaccinated children. The CDC, the American Academy of Pediatrics, and the Institute of Medicine have all issued statements supporting these studies. So the notion that vaccines cause autism isn’t a medical controversy. But when I appeared on television and was quoted in newspaper and magazine articles saying that vaccines didn’t cause autism, my life changed.

During a congressional hearing chaired by Indiana congressman Dan Burton to investigate the cause of autism, John Tierney, a congressman from Massachusetts, asked if I had vaccinated my own children. I said I had, stating their names and ages. At the next break, a member of Tierney’s staff came up to me, grabbed my arm, and pulled me aside. “Never,” he said, breathlessly, “never mention the names of your own children in front of a group like this.”

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