Avoiding Catastrophe in a High-Risk Environment: AUSMAT at Howard Springs

The Australian Medical Assistance Team (AUSMAT) led the implementation, establishment and management of Howard Springs International Quarantine Facility at the Centre for National Resilience from October 2020 to May 2021. The operation is internationally renowned for its success to mitigate leakage of the coronavirus disease from the quarantine facility to the community during a national policy of virus elimination or suppression. The operations success led to other Australian jurisdictions seeking to replicate the quarantine model. Here, we use three theoretical frameworks to describe AUSMATs approach to risk mitigation at the quarantine facility. © 2022 The Author(s).

SARS-CoV-2: A Rapid Review On The Effectiveness Of Face Coverings To Reduce Transmission

Introduction. At various stages of the COVID-19 pandemic, face coverings have been recommended and encouraged as one of the interventions to reduce transmission of the SARS-CoV-2 virus. However, in the earlier stages of the pandemic, decisions on face coverings relied primarily on evidence based on other viral respiratory infections. More direct evidence on the use of face coverings with COVID-19 developed in tandem with the pandemic. Health Technology Wales undertook an ultra-rapid review to inform national guidelines, the work assessed the evidence on the effectiveness of face coverings to reduce SARS-CoV-2 transmission. We also reviewed evidence on the efficacy of different types of face coverings. Methods.Weconducted a systematic literature search for evidence to address (i) the effectiveness of face coverings to reduce the spread of COVID-19 in the community, and (ii) the efficacy of different types of face coverings designed for use in community settings. We identified a rapid review in 2021 by Public Health England that closely aligned with our review questions. This provided the main source for identifying relevant studies, supplemented by a search for publications following their search date. Results. We identified two evidence reviews (including the Public Health England review) that examined the effectiveness of face coverings on reducing transmission of SARS-CoV-2;reporting on 31 and 39 studies, respectively. Two further primary studies were published after the two evidence review searches were included. Overall, the evidence suggested that face coverings may provide benefits in preventing SARS-CoV-2 transmission, although the higher-quality studies suggested that these benefits may be modest. Medical masks appeared to have higher efficacy than fabric masks, although the evidence was mixed. Conclusions. At the time of this review, evidence on the effectiveness of face coverings remains limited and conclusions rely on low-quality sources of evidence with high risk of bias, although higher-quality evidence points to some benefit. Face coverings may play a role in preventing transmission of SARS-CoV-2, particularly as part of a bundle of other preventative measures.

Impacts of COVID-19 lockdown on private domestic groundwater sample numbers, E. coli presence and E. coli concentration across Ontario, January 2020-March 2021: An interrupted time-series analysis.

Approximately 1.5 million individuals in Ontario are supplied by private water wells (private groundwater supplies). Unlike municipal supplies, private well water quality remains unregulated, with owners responsible for testing, treating, and maintaining their own water supplies. The COVID-19 global pandemic and associated non-pharmaceutical interventions (NPIs) have impacted many environmental (e.g., surface water and air quality) and human (e.g., healthcare, transportation) systems over the past 15-months (January 2020 to March 2021). To date, the impact of these interventions on private groundwater systems remains largely unknown. Accordingly, the current study aimed to investigate the impact of a province-wide COVID-19 lockdown (late-March 2020) on health behaviours (i.e., private domestic groundwater sampling) and groundwater quality (via Escherichia coli (E. coli) detection and concentration) in private well water in Ontario, using time-series analyses (seasonal decomposition, interrupted time-series) of a large-spatio-temporal dataset (January 2016 to March 2021; N = 743,200 samples). Findings indicate that lockdown concurred with an immediate (p = 0.015) and sustained (p < 0.001) decrease in sampling rates, equating to approximately 2200 fewer samples received per week post-interruption. Likewise, a slightly decreased E. coli detection rate was observed approximately one month after lockdowns began (p = 0.003), while the proportion of "highly contaminated" samples (i.e., E. coli > 10 CFU/100 mL) was shown to increase within one month (p = 0.02), followed by a sustained decrease for the remainder of the year (May 2020-December 2020). Analyses strongly suggest that COVID-19 interventions resulted in discernible impacts on both well user behaviours and hydrogeological mechanisms. Findings may be used as an evidence-base for assisting policy makers, public health practitioners and private well owners in developing recommendations and mitigation strategies to manage public health risks during extreme and/or unprecedented future events.