Twitter has flagged a tweet written by Donald Trump for “spreading misleading and potentially harmful information related to COVID-19”.
In one post, the US president falsely claimed that coronavirus is less deadly than the seasonal flu “in most populations”.
The tweet – which can still be viewed but has been hidden on Mr Trump’s page – said: “We have learned to live with it (the flu) just like we are learning to live with Covid, in most populations far less lethal!!!”
Facebook removed the post, with a company spokesman saying: “We remove incorrect information about the severity of COVID-19 and have now removed this post.”
Experts agree that COVID, which has killed more than 200,000 people in America and more than one million worldwide, is more lethal than the seasonal flu.
In other tweets, Mr Trump wrote that he was “feeling great” as he continues to recover from coronavirus.
He added that he was “looking forward” to the next presidential debate against his Democratic rival Joe Biden on 15 October in Miami.
There have been concerns the remaining debates might not be able to go ahead if Mr Trump is still suffering from coronavirus.
Mr Trump returned to the White House on Monday after he was treated in hospital forfor three nights.
Shortly after his return, thereleased two videos – one with footage of his journey accompanied by sweeping orchestral music, the other of him speaking on a balcony flanked by US flags.
In the videos, he told Americans to “get out there” and “don’t be afraid” of COVID-19 – despite the 210,000 coronavirus-related deaths recorded so far in the US.
“We’re going back to work, we’re going to be out front… I know there is a risk, there is a danger, but that’s ok,” he said.
He also suggested he could now be “immune” to the virus after feeling “better”.
But some experts, including America’s top infectious disease expert Dr Anthony Fauci, have warned the president could face a relapse in symptoms.
Lung specialist Professor Stephen Holgate told Sky News Mr Trump could become seriously ill with aof COVID-19 within days.
“He is still in the first wave. The second is yet to come, when the immune system goes into overdrive. It will probably hit him in two to three days’ time,” he said.
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Mr Trump appeared breathless as he returned to the White House after his hospital stay.
His illness has come just weeks ahead of Election Day, when Americans will choose either Mr Trump or Joe Biden for their next president.