A rapid COVID-19 vaccine rollout backfired in some US states

In this March 9 file photo, Liana Fonseca looks away as she receives the Pfizer COVID-19 vaccine in Miami. (AP Photo/Marta Lavandier, File)

Despite the clamor to speed up the U.S. vaccination drive against COVID-19 and get the country back to normal, the first three months of the rollout suggest faster is not necessarily better.