The X Factor quarter final weekend was certainly not without drama, as not one but two contestants succumbed to illness.

On last night's results show, Cheryl Fernandez-Versini was heard "screaming" for help as one of her singers, Celina from 4th Impact, collapsed and fell to the floor.

Celina reportedly fainted and was "out cold" for around five minutes, shortly after she and her sisters were booted off the show in favour of Lauren Murray.

The Filipino singer was taken off stage by paramedics and brought to an ambulance.

Although her mentor Cheryl remained on stage for The Xtra Factor, viewers said she looked "visibly shaken."

Later the band tweeted to let fans know Celina was doing better, while Cheryl thanked all four girls for being "most gracious, humble & special little souls.":

It's not the first time Celina has suffered health issues during her stint in the show – a few weeks back she fainted before a performance and struggled to stay standing as she sang with her sisters.

In the end, a chair was brought on stage for her to sit on as the judges rushed through their post-performance comments.

Of course, 4th Impact weren't the only ones dogged by health issues this week.

The show's favourite to win, Louisa Johnson, has been separated from her fellow contestants due to a nasty throat infection which Simon Cowell worries will spread.

Louisa admitted on Saturday night's show that she was in pain and said only "adrenaline" had helped her to make it through her renditions of Justin Bieber's Love Yourself and Labyrinth's Jealous.

For now the contestants have been urged to sleep in separate rooms in the X Factor house, and producers have been doling out the Lemsip and hand sanitiser.

"If any of the other contestants come down with the same thing we will really struggle," a source told The Sun. 

"Olly [Murs] is also sick and struggling. The bugs going round at the moment are really nasty."

A collapse and a throat virus… hopefully that's the end of the X Factor illnesses for this year.