During an interview with CNN on Thursday, Operation Warp Speed Chief Adviser Dr. Moncef Slaoui stated that there will likely be "tens of millions of doses" of a coronavirus vaccine "in December and January," and is "optimistic that we will have vaccines for everybody within the year 2021, ideally within the first half of the year 2021." Slaoui also said he believes the vaccine will be "highly efficacious. I wouldn't be surprised if it's in the 90%."