News by Shoba Rao, Anton Nilsson, Katy Hall, Rhiannon Tuffield 3rd May 2021 10:49 AM Premium Content Subscriber only Australia's leading medical authority has refused to be drawn on a timeline for the COVID-19 vaccine rollout, as the program expands to the over 50s age group. Chief Medical Officer Paul Kelly said the rollout was "progressing significantly", according to The Australian. The remarks came in response to estimates that it could take 18 months to vaccinate the Australian population amid the deadly coronavirus pandemic. "We had over 60,000 on one day last week, and close to 80,000 on another day, (who were) vaccinated," Professor Kelly said, according to