Despite the pandemic, Trump delivered his remarks in front of more than 1,000 people speaking from the White House South Lawn.
"We have three different vaccines in the final stage of trials right now, years ahead of what has been achieved before," said Trump. "We will have a safe and effective vaccine this year. And together we will crush the virus."
More than 180,000 people have died in the United States from the coronavirus - more than any other country, according to a Reuters tally.