Head of School of Public Health and Community Medicine at UNSW, Professor Raina MacIntyre talks to Mike about cold and flu season

<p>Head of School of Public Health and Community Medicine at UNSW, Professor Raina MacIntyre talks to Mike about cold and flu season</p>

Australia Overnight is broadcast from 12am-6am on Saturday and Sunday on 2GB, 3AW and 4BC, and 12am-3am on 6PR.

<p>Australia Overnight is broadcast from 12am-6am on Saturday and Sunday on 2GB, 3AW and 4BC, and 12am-3am on 6PR.</p>