Vaccines were a chance to redeem failures in the U.S. coronavirus response. What went wrong?

Two promising coronavirus vaccine candidates were speeding through trials in September when the country’s top public health agency invited states to submit plans describing how they would get the shots to millions of people. It was an opportunity, eight months after the United States confirmed its first coronavirus case, to redeem the nation’s devastating failures in organizing a regimen of testing, contact tracing and equipping medical workers with protective gear…