The president removed his mask on the balcony of the White House, where several staff and aides have tested positive for the virus in recent days, reports BBC.

Trump asked Americans that they should be afraid of the highly infectious disease which has now touched nearly the countries across the globe.

"Don't be afraid," Trump said in a video post shared on his Twitter page.

"Don't let it dominate you," he said.

Trump said he is now feeling better.

Wearing a navy business suit, tie and mask, Trump walked out of Walter Reed National Military Medical Center on Monday evening pumping his fist and then flew back to the White House on the presidential helicopter Marine One.

But despite being discharged from the hospital questions remain over the seriousness of Trump's illness after a weekend of conflicting statements.

At the same time true scale of the outbreak at the White House remains unclear, as more people, some very close aides of Trump, test positive for COVID-19.

Trump's diagnosis has upended his campaign for a second term in office, less than a month before the Republican president faces Democratic challenger Joe Biden in the White House election.

The doctors treating Trump without giving specifics regarding his care said he was doing well and would receive another dose of remdesivir before being discharged.