The White House on Wednesday unveiled its plans to roll out Covid-19 vaccines for children ages 5 to 11, pending FDA authorization. The Biden administration has secured enough vaccine supply to vaccinate the 28 million children ages 5 to 11 who would become eligible for vaccination if the vaccine is authorized for that age group and will help equip more than 25,000 pediatric and primary care offices, hundreds of community health centers and rural health clinics as well as tens of thousands of pharmacies to administer the shots, according to the White House. … Administration officials will provide more details on the rollout during an 8:45 a.m. ET briefing, an official familiar with the plans said.