Heartbreaking footage has captured the moment a brain-dead infant is wheeled into surgery to donate her organs.

Coralynn Sobolik, 22 months, was kissed goodbye by her mother, Meagan Sobolik, 29, who said: 'You get to save three people. I love you forever'.

In the tear-jerking video, doctors and nurses line the corridors to honour Coralynn while singing Amazing Grace.

Coralynn, of New Hampton, Iowa, had been declared brain dead just one day earlier after a five-day battle with a virus.

Complications from the illness meant she reportedly suffered three cardiac arrests before being declared brain dead.

Three people will be saved by Coralynn, whose life support was turned off on April 22 before she donated her heart, liver and kidneys.

Coralynn Sobolik, who was one years old, had her life support turned off on April 29. Pictured with her father, Paul Sobolik, 32, when she was a healthy baby

In the tear-jerking video, doctors and nurses line the corridors at Mayo Clinic Hospital, Rochester, to honour Coralynn while singing Amazing Grace (pictured)

Mrs Sobolik, who is joined by Coralynn's father, Mr Sobolik, (pictured together) can be heard saying: 'I love you forever, you're the best thing that ever happened to me'

Mrs Sobolik, recorded alongside Coralynn's father, Paul Sobolik, 32, can be heard saying: 'I love you forever, you're the best thing that ever happened to me.'

Coralynn can be seen wearing a little knitted hat with daisies on and hooked up to dozens of wires.

Mrs Sobolik had nothing but praise for staff who flocked around her daughter as she made her last ever journey to save the lives of three others.

She said: 'I don't know if there is a word for more than phenomenal but the hospital staff were just that.

'They treated us as though they were our family.

'It was such a moving moment and I'm so touched that Coralynn managed to touch that many lives.'

Mrs Sobolik shared the video on Facebook for family members outside of the US to watch.

She was shocked to find the clip soon became a viral sensation and viewed over nine million times.

Mrs Sobolik said: 'I'm so grateful that Coralynn's memory can live on.

'We are overwhelmed by the support we have received from people all over the world. It's great to know our little girl has inspired so many.'

Coralynn became ill and was taken to hospital, but when she arrived was struggling to breathe. Pictured before, unclear what age

An obituary for Carolynn said that she was mischievous and loved the 'Baby Shark' song

The grieving parents were determined to not let her death be in vain and made sure her heart, liver and kidneys were donated to others in need. The video shows her last moments (pictured)

Mrs Sobolik said: 'Coralynn now has a legacy that can live on through these three different people'. Pictured, the nurses and doctors lining the corridors

WHAT IS PARAINFLUENZA? Human parainfluenza viruses (HPIVs) commonly cause upper and lower respiratory illnesses in infants, young children, older adults, and people with weakened immune systems, but anyone can get infected. After you get infected, it takes about two to seven days before you develop symptoms. Symptoms of upper respiratory illness may include a fever, runny nose and cough. Symptoms of severe lower respiratory illness may include croup, bronchitis or pneumonia. Human parainfluenza viruses (HPIVs) usually spread from an infected person to others. There is no specific antiviral treatment for HPIV illness. Most people with HPIV illness will recover on their own. If your symptoms are severe or do not improve, you should seek medical attention. Source: CDC Advertisement

Mr and Mrs Sobolik, who have two other children, Maycee and Oliver, whose ages are unknown, were determined to not let Coralynn's death be in vain.

They decided to donate her heart, liver and kidneys to others in need.

Her heart went to a one-year-old boy while her liver went to a one-year-old girl.

Her kidneys were donated to a 41-year-old woman.

Mrs Sobolik said: 'I would encourage everyone to think about organ donation.

'Whether it's your mother, brother or little one, you have a choice to let their legacy live on.

'Coralynn now has a legacy that can live on through these three different people.'

When Coralynn became ill on April 17, she was taken to hospital two days later where doctors discovered she was struggling to breathe.

She had caught parainfluenza, a virus which causes respiratory problems.

There are different types of the virus, with most symptoms such a runny nose normally clearing up on their own.

But some can cause more severe breathing difficulties that lead to hospitalisation, although the figures are not clear.

Just before she was transferred to Mayo Clinic Hospital in Rochester, doctors used a tube to sedate Coralynn, which her parents said she was unable to cope with.

Her heart stopped and medical workers performed CPR for 25 minutes.

They were able to stabilise her, and therefore take her to Mayo.

There, doctors said the results of her echocardiogram - which looks at the heart -were good. But a CAT scan showed the little girl had brain damage.

Doctors thought she would wake up but did not know how impaired she would be.

On Coralynn's GoFundMe page, Melissa Brevig, sister of Mrs Sobolik, wrote: 'No one care [sic] about if she would be different we all just wanted her to wake up and look at us again.'

However in the middle of the night, Coralynn's brain began to swell and an emergency CAT scan showed she was brain dead.

This meant that she would never regain consciousness and support her own breathing.

Mrs Brevig wrote: 'There was no coming back. Meagan and Paul had to make the hardest decision of their life.

'Cora will be going into surgery and she will be saving three people and gifting someone's baby with a very strong heart.'

The GoFundMe account raising money for the little girl's funeral has amassed over £1,700.

An obituary for Coralynn, who was born on July 18, 2017, reads: 'Coralynn had a mischievous side, too. She was known to steal her big sister’s Barbie dolls and pour out Lucky Charms for the marshmallows.

'She loved being outside blowing bubbles and chasing kitties and puppies. She liked bubble baths, wearing her boots (or anyone’s shoes she could fit in) and listening to "Baby Shark".

'She was a loving little girl, who liked to give out kisses and had an infectious laugh. She enjoyed watching for the school bus, often asking "Where’s Sissy?"'