The 28-year-old – Sinead O’Connor in the Channel 4 soap – posted a series of distressing Instagram videos from her hospital bed while wearing an oxygen mask.
“Last night I got a bit of a headache before bed and my sinuses – I woke up so ill and I had to call an ambulance basically,” she told her followers.
“I’ve tested positive for COVID. I feel like I’ve been run over. The worst part is that my skin – my front and back and my skin – I can’t touch my skin and it’s killing me.
“I’m in so much pain. Oh my God, this is horrible. It happens so quick. I basically woke up and I couldn’t move.”
It is unknown whether Davis, who is pictured on her Instagram attending a friend’s wedding just two days ago, had been vaccinated against coronavirus before she fell ill.