We speak with Dr Katherine Gibney, infectious diseases clinician, public health physician and medical epidemiologist about the decision to extend Victoria's lockdown, the latest evidence of the transmissibility and infectiousness of current circulating strains, issues around mandating vaccines in healthcare workers and what it was like being a clinician in 2020.We want to hear from you! Help us shape future episodes of our podcast by telling us a little about yourself, how you listen to Infection and Immunity – Evidence Explained and what you'd like to hear more of in 2022. The survey is anonymous and will only take a few minutes to complete.