Watch: Piers Morgan warns of the effects of long Covid after Lewis Hamilton's sickness
Racing driver Hamilton had to be helped on to the podium after finishing third in Sunday's race at the Hungaroring track in Hungary and was late for the press conference while he visited his team's doctor.
He tweeted: "Do not underestimate the effects of long-covid. I’ve never had fatigue like this, nearly 3 weeks after symptoms started.
Do not underestimate the effects of long-covid. I’ve never had fatigue like this, nearly 3 weeks after symptoms started. Lewis, one of the world’s fittest athletes, had covid 8 months ago and is still having issues he believes are linked to it. 👇 https://t.co/SbfQXLR6f9
— Piers Morgan (@piersmorgan) August 1, 2021
"Lewis, one of the world’s fittest athletes, had covid 8 months ago and is still having issues he believes are linked to it."
Hamilton, 36, caught COVID in Dubai in December, and believes its aftereffects are still troubling him.
The racing driver told Sunday's press conference: "I haven’t spoken to anyone particularly about long COVID, but I think it is lingering there.
"I was having real dizziness and everything got a bit blurry on the podium. I have been fighting with staying healthy following what happened at the end of last year, but still it’s a battle.
"I remember the effects of when I had COVID, and training has been different ever since then. The level of fatigue that you get is different and it’s a real challenge."
Recently, Morgan has angered sports stars, commentators and fans by criticising the Tokyo Olympics.
He has complained about the lack of atmosphere with dramatically cut down numbers of spectators allowed in to watch events, and criticised US gymnast Simone Biles for dropping out of events due to mental health struggles.
BBC sports pundits Gary Lineker and Gabby Logan have argued with him on Twitter, where he has also controversially claimed that athletes should not feel proud of displaying their silver and bronze medals.
Watch: What is long COVID?