Yet the past four years have turned into a nightmare for the family as Emily soon suffered side effects. Only two weeks after her first HPV injection, the teenager experienced dizziness and nausea.

“The symptoms grew increasingly worse after the second and third injections, and I went to A&E several times with severe chest and abdominal pains as well as difficulty breathing,” Emily, now 17, said. “One time I couldn’t move anything on one side of my body. I didn’t know what was happening.”

Emily is one of the thousands of teenage girls who have endured debilitating illnesses following the routine immunisation. She is yet to recover and has no idea when her health will return to normal. 

“Prior to the vaccination Emily had an ”˜unremarkable’ medical history with no problems,” said Mrs Ryalls, 49, from in Ossett, West Yorkshire. “She was considered very healthy and represented the school at hockey, netball, athletics and was a keen dancer. She was also a high achiever at school, in the top sets for everything and predicted at least 10 GCSE with high grades. Her future was very bright.”

Mrs Ryalls reported Emily’s condition to the Medicines and Healthcare Products Regulatory Agency (MHRA). In the 10 years to April this year the agency received almost 22,000 “spontaneous suspected” adverse drug reaction (ADR) reports in 13 routine immunisation categories including flu, MMR, tetanus, diphtheria and polio, according to a Freedom of Information response released earlier this month.

In the HPV category alone, ADRs numbered 8,228, of which 2,587 were classified as “serious” – defined by several criteria, including whether it resulted in hospitalisation or was deemed life threatening.

The MHRA said that the figures did not reflect the true amount of ADRs because of an “unknown and variable level of under-reporting”. The agency estimates it receives about 10 per cent of all reports, suggesting the actual number of girls suffering ADRs could be tens of thousands. It also said that “many millions” of the vaccinations were administered in this time frame without any problems reported.

“Every visit to a doctor was met with rolled eyes,” said Mrs Ryalls. “Every mention of the HPV vaccination was met with hostility and ridicule. We were eventually referred to a local paediatrician who told her to push herself to get back to normal – ”˜We all feel tired in the mornings, Emily’ was one of the remarks regarding her complete exhaustion.”

Two years after falling ill, Emily was eventually referred to Dr Pradip Thakker at Queens Medical Centre in Nottingham; he used a tilt table test to diagnose PoTS (postural orthostatic tachycardia syndrome), a condition where moving from lying down to standing up causes an abnormally high heart rate. By this time Emily was able to manage only three to four hours of school a week. Mrs Ryalls, who had built up a small publishing company from scratch, was forced to close it and become Emily’s full-time carer.

Cancer Research UK points out that cervical cancer is the second most common cancer in women under the age of 35. In the UK, about 3,000 women a year are diagnosed with cervical cancer and it is estimated that about 400 lives could be saved every year as a result of vaccinating girls before they are infected with the human papilloma virus.

The NHS says that the vaccine, which was introduced as part of the routine immunisation programme in 2008, protects against the two HPV types that cause 70 per cent of the cases of cervical cancer. Screening is still needed to try to pick up cervical abnormalities caused by other HPV types that could lead to cancer.

Since September 2014, girls have received only two injections; the second is taken six to 24 months after the first. The NHS says the programme has proved to be “very effective”. However, other countries are taking action following reports of increasing numbers of girls suffering side effects. A Danish TV documentary broadcast earlier this year highlighted the large number of girls who appear to have been affected following their HPV vaccination. Some, like those the Ryalls have met in the UK, are now wheelchair-bound.

Last year, Japan withdrew its recommendation for the HPV vaccine because of reported side effects.

In an article published last week in the Springer journal Clinical Rheumatology, Dr Manuel Martinez-Lavin, who has been treating people with chronic pain conditions for more than 30 years, said these illnesses are “more frequent after HPV vaccination”. He wrote: “Vaccination has been one of the most effective public health measures in the history of medicine. However, seemingly inexplicit adverse reactions have been described after the injection of the newer vaccines vs human papillomavirus (HPV). Adverse reactions appear to be more frequent after HPV vaccination when compared to other type of immunisations.”

Dr Martinez-Lavin said PoTS and fibromyalgia are among the diseases he believes have developed after HPV vaccination, and that clinicians should be aware of the possible association between HPV vaccination and the development of these “difficult to diagnose” painful syndromes.

Mrs Ryalls and about 80 families in similar situations across the UK are taking action. They have formed the Association for HPV Vaccine Injured Daughters (AHVID) to bring families with girls adversely affected by the HPV vaccine together.

She said: “We want to have a stronger voice and we are pushing hard for regional treatment and assessment centres along the lines of Denmark and Japan. We want increased reporting of adverse reactions, better educational support and greater transparency and information to enable parents to make an informed decision regarding consent to HPV vaccination.”

Mrs Ryalls also said the AHVID wants better research and treatment for the girls’ conditions and that treatment is currently “pot luck”, as too few doctors spot the signs of PoTS and other autoimmune conditions.

“I’m not anti-vaccination,” Mrs Ryalls said, “but it’s a big area with a lot of questions. I would never say to anyone don’t have it, because it has to be a personal choice. I would say do your own research and don’t just rely on the school leaflet.”

Emily managed to return to school to complete enough GCSEs to move into the sixth-form college where she is now studying English language and photography. She hopes to study the latter at university.

The MHRA said it had no concerns on the numbers of ADRs related to the HPV vaccine and that the “expected benefits in preventing illness and death from HPV infection outweigh the known risks”.

The agency said: “The vast majority of suspected side effect reports for HPV vaccine relate to known risks of vaccination that are well described in the available product information. The reporting rate of suspected side effects, which are not necessarily proven to be caused by the vaccine, is influenced by many factors and expected to differ across vaccines. The greater number of reports for HPV vaccine does not necessarily mean that it is any less safe than other vaccines.

“Reports of PoTS following HPV vaccine remain under review by EU regulators. PoTS can occur naturally in adolescent girls and, at present, there is insufficient evidence to indicate that the vaccine is a cause. This will remain under review.”