The president has also posted a new video on his Twitter account.

- It has been a very interesting journey, I have learned a lot about covid.

I learned it by going to school, this is the real school, this is not reading books school, Trump says in the video.

The president thanks the doctors and medical staff, and also thanks the many Trump supporters who gathered outside the hospital.

- I also think we will offer a little surprise to the great patriots who are out on the street, and they have been out there for a long time.

They have Trump flags and love our country.

I will not tell anyone but you, but I will pay a little surprise visit, says Trump.

Shortly afterwards, the president appeared outside the hospital, reports AP.

The text is updated.