President Donald Trump retweeted a post accusing Fauci and Democrats of suppressing the use of the drug hydroxychloroquine to treat the new coronavirus.
While there are no guarantees, "I feel good about the projected timetable," Fauci told Reuters in an interview.
Fauci's emphasis on protections including physical distancing, wearing masks, avoiding crowds and washing hands have put him at odds with a president eager to get people back to work to boost the eco
The number of cases in the United States has surged to more than 3 million as states that quickly reopened bars and restaurants have reported sharp increases.
The strain of the coronavirus he cited, which originates in Italy made it spread better between people.
The testifying medical officials noted that even though many of these trials have been accelerated, they will not release the vaccine to the public unless they know it
He mentioned a slowing in the growth of cases in hotspots such as New York, even as other areas of the country were seeing spikes.
Trump has repeatedly clashed with the Democratic-controlled House over its moves to investigate his actions or those of his administration.
Trump's administration has recommended stay-at-home guidelines through the end of April, and Trump has floated May 1 as a possible date to start reopening some areas.