Lack of staff, funds and tools: health officials worry the US isn’t ready for Covid vaccines

Experts are frustrated after months of inconsistent information and concerned that a mass vaccination plan will stumble

Millions of Americans are counting on a Covid-19 vaccine to curb the global pandemic and return life to normal.

While one or more options could be available toward the end of this year or early next, the path to delivering vaccines to a population of 330 million people remains unclear for the local health officials expected to carry out the work.