The Covid-19 response was a crucible of politics and public health—a volatile combination that produced predictably bad results. As scientific expertise became entangled with political motivations, the public-health establishment found itself mired in political encampment. It was, as Sandro Galea argues, a crisis of liberalism: a retreat from the principles of free speech, open debate, and the pursuit of knowledge through reasoned inquiry that should inform the work of public health.
