A top official heading the Trump administration’s federal vaccine program said Sunday that the government is considering giving people a half-dose of Moderna’s COVID-19 vaccine in order to get more people inoculated faster. Dr. Moncef Slaoui, head of Operation Warp Speed, the federal program to surge vaccine development and distribution, told CBS’ “Face the Nation” on Sunday that officials were in talks with Moderna and the Food and Drug Administration (FDA) about the idea. The vaccine regimen for Moderna’s product involves an initial inoculation, followed by a booster shot 28 days later. Pfizer’s vaccine also follows a similar regimen. “We know that for the Moderna vaccine, giving half of the dose to people between the ages of 18 and 55, two doses, half the dose, which means exactly achieving the objective of immunizing double the number of people with the doses we have,” Slaoui said. “We know it induces identical …