States have a new Covid problem: Too much vaccine

The supply of Covid vaccines is now exceeding demand in rural areas and big cities, even as states lift remaining eligibility restrictions, open walk-in clinics and even offer shots to out-of-state residents.

It's a jarring twist after months during which vaccine-seekers crashed appointment websites seeking shots and stalked pharmacy counters hoping to snag leftover doses. And it’s a problem that state and federal officials are rushing to address with only limited success...