Europe's youngest coronavirus victim saw a GP three days before she collapsed at home and died but the doctor thought she was having an allergic reaction and ruled out Covid-19, it is claimed.
The "healthy" 12-year-old Belgian girl, named only as Rachel, was prescribed an antipyretic to bring down her fever and the doctor assured her mum that the virus "seemed out of the question", her devastated sister said.
Rachel was sent home but her condition rapidly deteriorated to the point where she was having trouble breathing, so her mum, who is of Ghanaian origin, called an emergency phone number and begged for an ambulance.
But the call-taker didn't understand what the panicked mum was saying, the call ended without an ambulance being sent and after Rachel collapsed her distraught dad desperately tried to resuscitate her as he pleaded "stay with me", the sister said.
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The grief-stricken family, from Ghent, told the Het Nieuwsblad newspaper that they are disappointed in Belgium's healthcare system following an umber of errors that led to the tragedy, which they say could have been prevented.
The adult sister said: "Rachel was perfectly healthy. Belgium must start testing young people for the virus. Only then can children like Rachel be saved.
"My mother begged for help, but no one has taken the necessary steps to help my sister."
The sister said Rachel - now one of the youngest victims in the world - came down with flu-like symptoms last Friday and their mum took her to see a GP to find out if she had coronavirus.
But the doctor thought Rachel, who had allergies, was suffering a reaction and prescribed an antipyretic to reduce her fever.
The sister said: "My mother was reassured that Covid-19 seemed out of the question."
At that point, Rachel had a fever of about 37-38 degrees and didn't feel hungry, but she was able to do school homework that her teacher had dropped off.
From Sunday night into Monday morning, her condition took a turn for the worse and she woke up at 3am to tell her parents that she wasn't feeling well.
Her mum gave her some yoghurt and the antipyretic medicine, and she went back to sleep.
When she woke up at 7.30am on Monday she told her mum that she wasn't feeling any better, so the worried mother called the doctor again.
The sister said Rachel "was not a priority" due to her young age and their mum was told a GP couldn't see her until 10.30am.
Their mum tried to put Rachel back to bed, but within minutes her condition was even worse and she was struggling to breathe and clutching her chest in agony.
Rachel's frantic mum called for an ambulance but there was a language barrier and the call-taker didn't understand what the problem was and the call ended, it was reported.
Staff at the emergency centre tried to call back three times, but they didn't receive an answer, HLN reported.
Staff also listened to a recording of the first call, but they still couldn't understand what the mum was saying.
Police were sent to the home to investigate, but Rachel was gone by the time they arrived.
The sister said the family asked a friend to drive them to the hospital, adding: “My mother literally asked for help, but no one came. Rachel died in our living room in half an hour when our dad tried to get her dressed."
Rachel collapsed and her dad began performing CPR, pleading "stay with me, stay with me".
The friend drove the unresponsive girl to the hospital, where she was pronounced dead.
Rachel's family don't know where she contracted the virus. Schools had already been shut due to the pandemic.
Her sister said their devastated mum has been struggling with feelings of guilt and asking why her daughter "wasn't a priority for the healthcare system".
She said no one else in the family has displayed symptoms and none has been tested following Rachel's death.
Several children have died in Europe in recent days after contracting coronavirus.
They include 13-year-old Ismail Mohamed Abdulwahab, from Brixton, south London. He became the UK's youngest victim when he died on Monday.
He had no known underlying health conditions.
A 14-year-old boy died in Portugal on Sunday and a 16-year-old girl died in Paris last week.
Rachel's sister said her death should serve as a warning to young people who think they are invincible and parents who feel the same way about their children.
She called for wider and earlier testing for Belgians with symptoms.
As of Wednesday afternoon, almost 14,000 people have tested positive for coronavirus in Belgium - the 10th highest total in the world - and 828 have died.
Rachel's death left medics deeply upset and stunned Belgians as it was announced on Tuesday.
Emmanuel Andre, a spokesman for the country's crisis centre, became visibly upset as he told journalists that a 12-year-old girl had died.