Dr. Joel S. Hirschhorn, author of Pandemic Blunder and many articles and podcasts on the pandemic, worked on health issues for decades, and his Pandemic Blunder Newsletter is on Substack. As a full professor at the University of Wisconsin, Madison, he directed a medical research program between the colleges of engineering and medicine. As a senior official at the Congressional Office of Technology Assessment and the National Governors Association, he directed major studies on health-related subjects; he testified at over 50 US Senate and House hearings.