WHO cares about a lollipop when you can get a free bike as a reward for getting immunised.
Stanhope Gardens youngster Paolo Eusebio, 4, enjoys riding his first bike as one of 12 WentWest competition winners.
WentWest, based in Blacktown, ran a competition in April as an incentive for parents to get their four-year-olds immunised.
Paolo's immunisation was the final childhood component of the National Immunisation Schedule before a child starts school.
Children had a chance to win one of 12 bikes as part of the WentWest competition.
More than 60 medical practices across western Sydney took part in the competition, a 46 per cent increase on last year.
The latest National Health Performance Authority immunisation rates indicate 91.3 per cent of children in western Sydney are fully immunised.
"We need to make sure that our children and our community are protected against infectious diseases," WentWest health integrated care program clinical head Michael Crampton said.
Paolo's mum Liza said she would have got her son immunised, regardless.
"The immunisation was free, so the bike was a bonus," Mrs Eusebio said.
"It means Paolo's immunisation is now up to date, as he starts school next year.
"It's for his protection against preventable diseases and is one less thing to worry about."
She urged all parents to get their children immunised.
"Get it done, as it only brings benefits to your child and others," Mrs Eusebio said.
"You shouldn't worry about anything you can control."