Americans were strongly encouraged (but not forced) to get the vaccine. Many died or were seriously injured by that vaccine, resulting in injury awards totaling about $3 billion. The 1976 flu vaccine fiasco was crucial in that it permanently altered the perception of vaccine risks for politicians and drug companies alike. As explained by Wakefield:
https://www.lewrockwell.com/2020/09/joseph-mercola/what-you-need-to-know-about-the-act-of-1986/