Among the concerns:

— States say they need more than $8 billion from the federal government to promote and distribute vaccines.

— The federal government has not told states how many doses they will receive, hampering their ability to plan for which of many priority populations should get vaccinated first.

— Nearly a dozen states still have not agreed to share patient data with the federal Centers for Disease Control, citing privacy concerns, meaning it will be hard for the federal government to track who has been vaccinated and who still needs a second dose.