Over the next six months there will be enough coronavirus vaccine produced to immunize every American, Operation Warp Speed chief Moncef Slaoui is predicting. “Hopefully, by the middle of the year, I hope most Americans will have been immunized,” Slaoui, head of the Trump administration’s vaccine initiative, said at a Post Live event yesterday. “If enough people are immunized, we should have this pandemic under control in the second half of 2021.”