U.S. President Donald Trump predicted on Wednesday at least 100 million doses of a coronavirus vaccine could be distributed in by the end of 2020, contradicting a top government health official Trump dismissed as confused.

Hours earlier, Robert Redfield, director of the federal Centers for Disease Control and Prevention, said a COVID-19 vaccine could be broadly rolled out by the middle of next year or a little later.

ā€œNo I think he made a mistake when he said that,ā€ Trump said, telling reporters he called Redfield. ā€œThat’s incorrect information. ā€œI believe he was confused. I think he just misunderstood the question, probably.ā€

Redfield, head of the federal government’s disease control agency, made his comments in testimony before a U.S. Senate panel

He said general availability of a vaccine could come by ā€œlate second quarter, third quarter 2021.ā€

A vaccine could be ready as soon as this November or December, Redfield said, adding that limited first doses could go to those who were most vulnerable. But ā€œin order to have enough of us immunized to have immunity, I think it’s going to take six to nine months,ā€ he added.

(Reporting by Alexandra Alper and Steve Holland; Writing by Doina Chiacu; Editing by Sandra Maler and David Gregorio)