WASHINGTON – The leader of the Trump administration's vaccination program says people who have been infected with the coronavirus — a group that includes President Donald Trump — should be vaccinated.Moncef Slaoui, the chief adviser of Operation Warp Speed, told CNN's “State of the Union” on Sunday that the vaccine is safe for those who have recovered and offers stronger and potentially longer protection than does the virus itself.“We know that infection doesn’t induce a very strong immune response and it wanes over time.