Harry Potter actor Jessie Cave has revealed her two-month-old baby has Covid-19.

The star, who is best known for her role as Lavender Brown in the wizarding film series, welcomed son Tenn in October after a “traumatic” birth that left her baby boy in a neonatal unit.

Posting on Instagram, Jessie revealed he has since tested positive for coronavirus, but is “doing well”. 

“I watched the news about lockdown from an isolated room in hospital. Poor baby is covid positive,” she wrote. “He’s okay and doing well but they are being vigilant and cautious, thankfully.

“This strain is super powerful and contagious so I do hope that people take extra care in the coming weeks.

“Really didn’t want this to be the start of my families new year [sic]. Really didn’t want to be back in a hospital so soon after his traumatic birth.

“Once again I’m in awe of nurses and doctors,” she said, adding that she is “even more proud” of her brother and father who both work for the NHS. 

Jessie added of baby Tenn: “He’s 9llbs 7 now so he’s a stronger and bigger boy than he was when we were last in a hospital room (and the needle went into his hand with louder more powerful screams.) Love and best wishes to everyone.”

The actor and her partner, comedian Alfie Brown, are already parents to Donnie, five, and three-year-old Margot. 

They had originally named their baby boy Abraham “Bam” Benjamin but announced in December they had changed his name to Tenn.

After giving birth, Jessie detailed how he was delivered 40 minutes after her waters broke, saying: “This has been a very different experience to my first two births… much more humbling, terrifying and out of my control.”