While the covid 19 crisis has been raging a group of important autism research papers have come out. The first found that for at least a dozen years autism rates among wealthy whites plateaued and began to decline while rates for non wealthy whites, Hispanics and blacks continued to climb. Black boys now have the highest autism rate of any group. The top row of charts below shows the rate falling for whites in wealthy CA counties while raising for all groups in the other lower income counties. Read the study.