Problem: Thinking back over the full semester, describe at least three instances in "modern" times (1980 - present day) in which a lack of regulation caused a public health crisis. Briefly describe the gap in regulation, the crisis, and the resulting regulatory oversight that was introduced. For example, there was no substantive regulation of medicinal products until the turn of the century. After 22 children contracted tetanus from a contaminated lot of vaccine, the Biologics Control Act was passed . . . (this example is not modern day, but it gives you an idea of the format).