Riley Hughes' parents write a beautiful birthday message to their son, who should be turning one.

At just four weeks old, little Riley Hughes died from whooping cough.

Since his death, Riley’s mum Catherine and dad Greg have been campaigning tirelessly for all children to be vaccinated against preventable diseases such as whooping cough.

Today, Riley’s parents, who are now expecting their third baby, shared this beautiful post on Facebook, remembering Riley not for his illness, but for his love…

Riley was a much-loved loved little boy, and now he has also become a symbol of the importance of immunisation in Australia, and around the world through Light For Riley.

A few days after these videos, Riley lost his battle with whooping cough (via Light For Riley):

Our thoughts are with the Hughes family as they mark this anniversary without their beloved son.