Dr Josh Freeman

Canterbury District Health Board


Air hygiene: a new frontier for IPC
Recent recognition that SARS-CoV-2 spreads via small airborne particles is a paradigm shift in IPC thinking and practice. While the IPC community  has extensive experience with how to effectively deal with contaminated surfaces, far less is known about how to manage contaminated air. This presentation will provide an overview of what we’ve learnt about airborne transmission of SARS-CoV-2, as well as the role of ventilation and air cleaning to manage this risk.

Josh is a Clinical Microbiologist and Clinical Director of Infection Prevention and Control at CDHB. Josh has a longstanding interest in IPC and a particular interest in reducing transmission risk in healthcare settings. Over the last year Josh has worked to provide national-level advice on reducing COVID transmission risk in managed isolation and quarantine facilities. During this time he’s also been involved in a national review of ventilation in MIQF hotels as well as a number of source investigations into transmission events within MIQF. Josh was also co-author of an MOH commissioned report into transmission events at The Pullman Hotel earlier this year. All of this continues to be a steep learning curve for Josh and he’s very keen to share what he’s learnt to date with NZ’s wider IPC community

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