Vaccines have become a divisive issue in American politics, but there is one thing all parties can agree on: The U.S. faces a crisis of public trust. Whether toward health agencies, pharmaceutical companies or vaccines themselves, public confidence is waning. Some would try to explain this away by blaming misinformation or antiscience attitudes. To do so, however, ignores a history of conflicts of interest, persecution of dissidents, a lack of curiosity, and skewed science that has plagued...