An infectious diseases expert is backing calls to allow Sydneysiders a backyard gathering on Saturday or Sunday, ahead of Monday's official reopening.

An infectious diseases expert is backing calls to allow Sydneysiders a backyard gathering on Saturday or Sunday, ahead of Monday's official reopening.

Tune into 2GB Drive from 3pm to 6pm each weekday.

Tune into 2GB Drive from 3pm to 6pm each weekday.