A student who almost died after eating a contaminated cheese sandwich as a toddler has been told she needs a second kidney transplant.

Lois Reid fell desperately ill when she was two years old. But a transplant at the age of six meant she could live a normal life.

This year, however, the 22-year-old suffered kidney failure again.

And now she has to play a waiting game again for another donor organ.

In the meantime, she spends three days a week hooked up to a dialysis machine in hospital.

But despite her illness and the exhaustion it causes, Lois managed to complete her final year of college.

And she passed her last exam just three days after getting out of hospital.

Lois said: “I couldn’t believe it when I found out I had passed. I phoned my mum and she just burst into tears.”

The family’s nightmare began after Lois fell ill after eating a sandwich with

home-made farmhouse cheese that was contaminated with E coli O157.

She was taken to Aberdeen Royal Children’s Hospital, where doctors found out her kidneys were failing.

Lois spent four years on dialysis, during which she suffered a stroke and frequent life-threatening infections.