HARRISBURG (AP) – Pennsylvania is ordering vaccine providers to work with agencies that serve older adults to help clear a backlog of people 65 and over who have spent months waiting for COVID-19 shots. The state boosted its overall rollout after a series of stumbles, but only 35% of older people are fully vaccinated against the coronavirus. Hundreds of thousands of them still need to be inoculated before the state plans to expand eligibility. The state ordered vaccine providers to collaborate with county-level agencies on aging to schedule appointments for people who want them but have not able to get them.