Cystic fibrosis campaigner Orla Tinsley is in hospital after suffering a health setback.
Last December she celebrated the first anniversary of her life-saving double-lung transplant, but over the weekend - her 32nd birthday - she was in enforced medical isolation.
The Kildare-born journalist, who now lives in New York, took to Twitter to say: "Thankful to finally get a bed today. Thankful treatment is working and will be well soon. Thankful for all the people who wished me happy birthday."
Before a hospital bed could be found for her, she said she spent three days in an ER cubicle.
"In better isolation room now. Surprised at how often I had to repeat, 'Transplant patients need isolation'," she wrote.
She received scores of messages wishing her a swift recovery, as well as a happy birthday.
One read: "Happy birthday Orla from a fellow double-lung transplant recipient. Keep on keepin' on, Orla."
Another said: "Hope you get to celebrate your birthday out of hospital soon, Orla. The warrior woman can defeat any challenge."
Cystic fibrosis is a genetically inherited disease that mainly affects the lungs and digestive system.
Ms Tinsley has been at the forefront of the fight to improve awareness and services.
Her campaigning was instrumental in the opening of a dedicated CF unit at St Vincent's Hospital in Dublin.
Ms Tinsley featured in an RTE documentary that followed her living with the condition in Ireland and New York, her failing health and the transplant that arrived at the 11th hour.
While on life support at New York Presbyterian Hospital, she still allowed the cameras to document her distress and life-changing surgery.
Ms Tinsley has yet to be allowed by medics to return to Ireland for health reasons, though she is hoping to make a trip in September.