An inspirational teenager who underwent a double lung transplant two years ago has died, days after her 17th birthday. Katie Gammon, from Barnstaple, underwent the transplant after suffering from cystic fibrosis, and spent the last few years campaigning to raise awareness of organ donation. Katie documented her journey on her Facebook page, Battling Cystic FIbrosis & Lung Rejection - Katies Journey, where her family announced the news of her death yesterday (Sunday).Our amazing KatieA statement on her page from her family yesterday said: On Katies birthday (20th August) we were all told there was no more that could be done for Katie, she had an infection that no medication could beat alongside rejection! Katie made the decision to be transferred home to our local hospital to pass away! They said there was a chance she wouldnt make it home but of course our amazing Katie made it home! Yesterday we arrived back home to Barnstaple, Katie saw the Drs and told them she didnt want to suffer anymore and all treatments were stopped! Katie was made comfortable and passed away peacefully today with her family by her side! Our beautiful girl is at rest and not suffering, after all it wasnt CF that took our girl Katie! Thank you for our support over the years! XxInspirational youngsterThe post has been shared by more than 1,100 people, all offering their sympathies to the beautiful and inspirational youngsters. One of Katies wishes was to meet beauty YouTube blogger Zoella, but her declining health meant she was unable to do so. Zoella tweeted yesterday: Just heard the really sad news that a viewer called Katie has passed away! I was supposed to be meeting Katie last week but unfortunately she was too poorly to attended so I was putting together a goody bag to send her tomorrow to make her feel better. It is heartbreaking to know shell never receive the presents and that I didnt get to meet her and give her a big hug! My thoughts go out to all her friends and family at this hard time.Katies journeyThe North Devon Gazette has followed Katies journey over the years, as she battled to fundraise for charity, to the moment she got the call telling her that her new lungs were ready. The former Petroc student Park Community School pupil enjoyed a normal childhood despite her cystic fibrosis diagnosis, but in 2010 her health began to deteriorate and in 2012 she was put on the transplant waiting list. In August 2013 Katie got the call she had been waiting for, and was rushed to Great Ormond Street Hospital in London for the 20 hour operation. Both before and after her transplant, Katie tirelessly worked to raise money to support Cystic Fibrosis and organ donation charities through yearly sponsored Tarka Trail walks.Honouring her legacyAustin Wallas, who helped Katie and her family organise the walks and tell her story, has paid tribute to her today (Monday). He told the Gazette: Id like to say how much of an honour it was to meet Katite, at a time when her story needed to be told. Im grateful to everyone who took part in the sponsored walks and hope everyone will continue to support organ donation. Im planning a memorial event for Katie and will continute to honour her legacy.Organ donationDespite an early success with her transplant, Katie was in and out of hospital following her transplant. She had spent the last few months in hospital before she passed away. Details of Katies funeral are yet to be released, but her family said it was one of Katies wishes for everyone to wear purple. Katie was passionate about raising awareness of organ donation. You can sign the organ donor register here. You can also visit her Facebook page, which is being managed by her family, here. Did you know Katie Gammon? Email your tributes to firstname.lastname@example.org.