US President Donald Trump, who is now fighting the Covid-19, told about his health on the Twitter page.
Also he thanked the doctors and nurses at the Walter Reed National Military Medical Center close to Washington DC, where he is being treated.
"I came here, wasn't feeling so well, I'm much better now," he said, later adding: "Over the next period of a few days I guess that's the real test. We'll be seeing what happens over those next couple of days."
As it was reported earlier, the medical team said he was improving and was already talking about returning to the White House but minutes later his chief of staff Mark Meadows told reporters that his vital signs during the previous 24 hours had been "very concerning".