Publications by authors named "Francois M Castonguay"

Introduction: Climate degradation poses a significant global health challenge, with healthcare systems paradoxically contributing to this issue while adhering to the principle of 'do no harm'. Notably, the healthcare sector accounts for a considerable share of greenhouse gas emissions in many industrialised countries, primarily due to the supply chain, including pharmaceuticals, disposable medical devices and personal protective equipment (PPE). The COVID-19 pandemic exacerbated this issue, with millions of tons of CO emissions attributed to single-use PPE.

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Case investigation and contact tracing (CICT) are public health measures that aim to break the chain of pathogen transmission. Changes in viral characteristics of COVID-19 variants have likely affected the effectiveness of CICT programs. We estimated and compared the cases averted in Vermont when the original COVID-19 strain circulated (Nov.

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Background: Facing a surge of COVID-19 cases in late August 2021, the U.S. state of Illinois re-enacted its COVID-19 mask mandate for the general public and issued a requirement for workers in certain professions to be vaccinated against COVID-19 or undergo weekly testing.

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Article Synopsis
  • The Philadelphia Department of Public Health revised its COVID-19 contact tracing methods in summer 2021 due to limited personnel resources.
  • The new protocol focuses on prioritizing recent cases and reduces the time spent on each case from 21-30 hours down to 8-11 hours.
  • Despite the adjustment, the department was able to maintain the effectiveness of the contact tracing program.
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Introduction: During the COVID-19 pandemic, the U.S. Centers for Disease Control and Prevention developed a simple spreadsheet-based tool to help state and local public health officials assess the performance and impact of COVID-19 case investigation and contact tracing in their jurisdiction.

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The COVID-19 Vaccines Global Access (COVAX) is a World Health Organization (WHO) initiative that aims for an equitable access of COVID-19 vaccines. Despite potential heterogeneous infection levels across a country, countries receiving allotments of vaccines may follow WHO's allocation guidelines and distribute vaccines based on a jurisdictions' relative population size. Utilizing economic-epidemiological modeling, we benchmark the performance of this pro rata allocation rule by comparing it to an optimal one that minimizes the economic damages and expenditures over time, including a penalty representing the social costs of deviating from the pro rata strategy.

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Control of neglected tropical diseases (NTDs) via mass drug administration (MDA) has increased considerably over the past decade, but strategies focused exclusively on human treatment show limited efficacy. This paper investigated trade-offs between drug and environmental treatments in the fight against NTDs by using schistosomiasis as a case study. We use optimal control techniques where the planner's objective is to treat the disease over a time horizon at the lowest possible total cost, where the total costs include treatment, transportation and damages (reduction in human health).

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