Tagged: ventilation

Ventilation in NZ schools during the Omicron wave – results from a preliminary study - Public Health Expert

Public Health Expert Feb 28, 2022

Dr Julie Bennett, Dr Tim Chambers and Dr Caroline Shorter* Ventilation is a key and relatively underutilised public health measure that can reduce the risk of Covid-19 transmission. Last year we outlined the need for adequate ventilation in schools and highlighted the need for nationwide ventilation surveillance. In this blog we provide an overview of the results of carbon dioxide … Read More

Air hygiene: how re-thinking air quality will help protect us from this and the next pandemic - COVID-19

Guest Author Feb 25, 2022

Ian David Longley, National Institute of Water and Atmospheric Research Our complacency about indoor air contributed to our vulnerability to COVID-19, and we’ll continue to be vulnerable to COVID and other emerging threats until we re-think how we share our air. Humans are social; we need to be with each other. That’s what made us vulnerable. Our first defences against … Read More

An investment in clean indoor air would do more than help us fight COVID – it would help us concentrate, with lasting benefits - COVID-19

Guest Author Feb 09, 2022

Peter Martin, Crawford School of Public Policy, Australian National University Sometimes the best things you can do are invisible. Such as fighting cholera by ensuring drinking water wasn’t contaminated by sewage, as happened in London in the 1840s. Or setting up an emissions trading scheme, which drove emissions down, despite former prime minister Tony Abbott attacking it … Read More

Monitoring CO2 indoors for improving ventilation as a Covid-19 control tool - Public Health Expert

Public Health Expert Oct 27, 2021

Dr Ian Longley and Dr Julie Bennett* Poor ventilation in indoor settings is widely recognised as a risk factor for the airborne transmission of the virus (SARS-CoV-2) that causes Covid-19. Virus-laden aerosols can remain airborne for hours in indoor spaces with low levels of ventilation. In this blog, we discuss how to use carbon dioxide (CO2) measures as a proxy … Read More

Reducing the risk of Covid-19 transmission through the use of air purifiers - Public Health Expert

Public Health Expert Oct 26, 2021

Prof Mark Jermy, Dr Julie Bennett, Dr Jason Chen, Phoebe Taptiklis and Dr Caroline Shorter* Indoor environments increase the risk of transmission for the virus that causes Covid-19 (SARS-CoV-2) by containment and concentration of the airborne virus. However, to reduce such transmission, the particles that carry the virus can be diluted by bringing in as much outdoor air as possible. Read More

COVID-19 cases rise when schools open – but more so when teachers and students don’t wear masks - COVID-19

Guest Author Oct 19, 2021

Zoë Hyde, The University of Western Australia   As students return to schools in Victoria and New South Wales after months of lockdowns, many people may be worried about the risks to their kids – and transmission overall. The role that schools play in transmission of the virus that causes COVID-19 has been difficult to work out, but new evidence … Read More

Improving ventilation in schools: a key protection against Covid-19 outbreaks and an enduring legacy for healthier learning - Public Health Expert

Public Health Expert Sep 10, 2021

Dr Amanda Kvalsvig, Dr Julie Bennett, Dr Jin Russell, Dr Jennifer Summers, Dr Leah Grout, Prof Michael Baker, and Prof Nick Wilson* As much of the country moves down Alert Levels, children are returning to in-person learning with little or no protection against the potential spread of Covid-19 infection in schools. It is therefore critical that ventilation is improved in … Read More

Throwing Open the Windows: The Need for Ventilation Improvements as Part of Covid-19 Outbreak Control in Aotearoa - Public Health Expert

Public Health Expert Aug 30, 2021

Dr Leah Grout, Prof Nick Wilson, Dr Julie Bennett, Dr Jennifer Summers, Dr Amanda Kvalsvig, Prof Michael Baker * The importance of indoor aerosol transmission of the virus that causes COVID-19 is increasingly recognised. In addition to public health measures such as masking and physical distancing, further protections are needed to prevent the spread of the virus. Interventions to improve … Read More

What do we know about Covid transmission via pipes and ventilation? - Infectious Thoughts

Siouxsie Wiles Jan 29, 2021

Is it plausible that the new cases contracted in the Pullman hotel in Auckland were transmitted via pipes? Here’s what the science tells us. As the investigation to determine how three people became infected with Covid-19 during their stay in New Zealand’s managed isolation and quarantine system gets away, it is worth considering a few studies published recently that point … Read More