Polices implemented in the wake of the pandemic

Taking a concept in the textbook and explaining a real-life event or policy with the tools you have developed. Think of recent policies that have been implemented in the wake of pandemics from around the world, and explain to someone how to analyze the effects of the policy using the new tools you have developed. Pick something specific that interests you, and explain it as well as you can, with some facts and sources to support your explanation.