Donald Trump's surprise drive-by to greet supporters outside hospital

US President Donald Trump made a surprise drive-by to wave at his supporters outside a military hospital where he has been admitted since Friday for the treatment of coronavirus.

The brief drive through Rockville Pike in Bethesda, a Maryland suburb of Washington DC, that separates the National Institute of Health and Walter Reed National Military Medical Center, brought cheers to his supporters who have been praying for his safety and healthy life.

I really appreciate all of the fans and supporters outside of the hospital. The fact is, they really love our Country and are seeing how we are MAKING IT GREATER THAN EVER BEFORE! Trump said in a tweet soon thereafter.

The crowd outside the Walter Reed National Medical Center has been increasing every passing day. His supporters from far and wide are arriving outside the hospital to express solidarity with the president and the First Family.

Trump and the First Lady tested positive for COVID-19 on Thursday night.

Trump was moved to the military hospital on Friday, which his doctors and White House said was taken out of abundance of caution.

On Sunday, before going out to wave at his supporters, Trump in a video posted on his Twitter handle said he will give a little surprise to some of the great patriots, who have been on the streets, and they have been out there for a long time.

They love our country. I am not telling anybody but you, I am about to make a little surprise visit, Trump said.

The president was seen wearing a mask and waving at his supporters from inside the black SUV. The windows were closed.

When I look at the enthusiasm. We have enthusiasm like probably nobody ever had, he said.

Trump in his short video message said he has learnt a lot about COVID-19, literally by going to school. This is the real school, he said in his video from inside the military hospital. I get it. I understand it, he said.

White House spokesman Judd Deere said appropriate precautions were taken in the execution of this movement to protect the President.

The movement was cleared by the medical team as safe to do, he said.

"President Trump took a short, last-minute motorcade ride to wave to his supporters outside and has now returned to the Presidential Suite inside Walter Reed," Deere said in another statement soon thereafter.

White House Correspondents Association or WHCA expressed its outrage at the decision of the president.

It is outrageous for the president to have left the hospital even briefly amid a health crisis without a protective pool present to ensure that the American people know where their president is and how he is doing, the WHCA said in a statement.

Two secret service agents wearing masks were seen inside the black SUV. The pool of reporters organised under the WHCA, who cover the president, were not informed in the presidential movement outside the hospital.

Now more than ever, the American public deserves independent coverage of the president so they can be reliably informed about his health, the WHCA said.

Earlier in the day, his doctors said the president was doing well, and he had not had fever since Friday. They hoped that the president might be discharged from the hospital on Monday.