LONDON — Britain's top medical group ruled today that a doctor who claimed autism was linked to a childhood vaccine can no longer practice in the U.K. The General Medical Council also found Dr. Andrew Wakefield guilty of "serious professional misconduct" as it struck him from the country's medical register. The council was investigating how Wakefield and colleagues carried out their research, not the science behind it.

When the research was published a dozen years ago, British parents abandoned the measles vaccine in droves, leading to a resurgence of the disease. Vaccination rates have never recovered and there are outbreaks of measles in the U.K. every year. In 1998, Wakefield and colleagues published a study alleging a link between autism and the vaccine for measles, mumps and rubella. Most of the study's authors renounced its conclusions and it was retracted by the journal in February.

Many other studies have been conducted since then and none have found a connection between autism and the vaccines. Wakefield moved to the U.S. several years ago and the ruling does not affect his right to practice medicine in the U.S. or in other countries.