As the nation’s COVID-19 vaccination campaign accelerates, governors, public health directors and committees advising them are holding key discussions behind closed doors, including debates about who should be eligible for the shots and how best to distribute them.A review by the Associated Press finds that advisory committees created to help determine how to prioritize limited doses have held closed meetings in at least 13 states that are home to more than 70 million people.In at least 15 other states, the meetings have been open to the public, the AP found.