CDC tells states: Be ready to distribute vaccines on Nov. 1

Vials used by pharmacists to prepare syringes used on the first day of a first-stage safety study clinical trial March 16 of the potential vaccine for COVID-19 in Seattle. (AP Photo/Ted S. Warren, File)

PROVIDENCE, R.I. — The federal government has told states to prepare for a coronavirus vaccine to be ready to distribute by Nov. 1.