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README.md
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@ -15,8 +15,8 @@ It can be used to compare the effectiveness of different airborne-related risk m
Note that this model applies a deterministic approach, i.e., it is assumed at least one person is infected and shedding viruses into the simulated volume.
Nonetheless, it is also important to understand that the absolute risk of infection is uncertain, as it will depend on the probability that someone infected attends the event.
The model is most useful for comparing the impact and effectiveness of different mitigation measures such as ventilation, filtration, exposure time, physical activity and
the size of the room, only considering long-range airborne transmission of COVID-19 in indoor settings.
The model is most useful for comparing the impact and effectiveness of different mitigation measures such as ventilation, filtration, exposure time, physical activity, amount and nature of close-range interactions and
the size of the room, considering both long- and short-range airborne transmission modes of COVID-19 in indoor settings.
This tool is designed to be informative, allowing the user to adapt different settings and model the relative impact on the estimated infection probabilities.
The objective is to facilitate targeted decision-making and investment through comparisons, rather than a singular determination of absolute risk.
@ -57,7 +57,7 @@ https://doi.org/10.1016/j.buildenv.2022.109166
### COVID Calculator
A risk assessment tool which simulates the long-range airborne spread of the SARS-CoV-2 virus for space managers.
A risk assessment tool which simulates the airborne spread of the SARS-CoV-2 virus for space managers.
### CARA Expert App

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cara/apps/templates/about.html.j2
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@ -11,7 +11,8 @@ Out of the main modes of viral transmission, the airborne route of SARS-CoV-2 se
For information on the Airborne Transmission of SARS-CoV-2, feel free to check out the special issue on the Interface Focus journal from Royal Society publishing: <a href=https://royalsocietypublishing.org/toc/rsfs/2022/12/2>Interface Focus: Volume 12, Issue 2</a> and an CERN HSE Seminar: <a href=https://cds.cern.ch/record/2743403>https://cds.cern.ch/record/2743403</a>.<br>
<br><br>
<h1 class="paragraph-title">What is CARA?</h1><br>
CARA stands for COVID Airborne Risk Assessment and was developed in the spring of 2020 to better understand and quantify the risk of long-range airborne spread of SARS-CoV-2 virus in workplaces. CARA comes with different applications that allow more or less flexibility in the input parameters:
CARA stands for COVID Airborne Risk Assessment and was developed in the spring of 2020 to better understand and quantify the risk of long-range airborne spread of SARS-CoV-2 virus in workplaces.
Since then, the model has involved and now is capable of simulating the short-range component. CARA comes with different applications that allow more or less flexibility in the input parameters:
<ul>
<li><a href='{{ calculator_prefix }}'>CARA calculator app</a></li>
<li><a href='/expert-app'>CARA expert app</a></li>

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cara/apps/templates/base/calculator.form.html.j2
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<div class="container container--padding">
<b>Quick Guide:</b><br>
This tool simulates the long-range airborne spread SARS-CoV-2 virus in a finite volume and estimates the risk of COVID-19 infection. It is based on current scientific data and can be used to compare the effectiveness of different mitigation measures.<br>
This tool simulates the airborne spread SARS-CoV-2 virus in a finite volume and estimates the risk of COVID-19 infection. It is based on current scientific data and can be used to compare the effectiveness of different mitigation measures.<br>
<b>Virus data:</b> <br>
SARS-CoV-2 covers the original "wild type" strain of the virus and three variants of concern (VOC):<br>
<ul>

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<div>
<p>
CARA is a risk assessment tool developed to model the concentration of viruses in enclosed spaces, in order to inform space-management decisions.
It does this by simulating the long-range airborne spread SARS-CoV-2 virus in a finite volume, assuming homogenous mixing, and it estimates the risk of COVID-19 airborne transmission therein.
It does this by simulating the airborne spread SARS-CoV-2 virus in a finite volume, assuming homogenous mixing for the long-range component and a two-stage jet model for short-range, and estimates the risk of COVID-19 airborne transmission therein.
Please see the <a href="/about">About</a> page for more details on the methodology, assumptions and limitations of CARA.
</p>
<p>

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cara/apps/templates/base/userguide.html.j2
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@ -223,7 +223,7 @@ This allows for:</p>
<br>
<h1>Conclusion</h1>
<br>
<p>This tool provides informative comparisons for COVID-19 (long-range) airborne risk only - see Disclaimer
<p>This tool provides informative comparisons for COVID-19 airborne risk only - see Disclaimer
If you have any comments on your experience with the app, or feedback for potential improvements, please share them with the development team <a href="mailto:cara-dev@cern.ch">Send email</a>.</p>
</div>

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cara/apps/templates/common_text.md.j2
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@ -33,7 +33,7 @@ We wish to thank CERN’s HSE Unit, Beams Department, Experimental Physics Depar
The report generated indicates how to avoid exceeding critical concentrations and chains of airborne transmission in spaces such as individual offices, meeting rooms and labs.
</p>
<p>
The risk assessment tool simulates the long-range airborne spread SARS-CoV-2 virus in a finite volume, assuming a homogenous mixture, and estimates the risk of COVID-19 airborne transmission therein.
The risk assessment tool simulates the airborne spread SARS-CoV-2 virus in a finite volume, assuming homogenous mixing for the long-range component and a two-stage jet model for short-range, and estimates the risk of COVID-19 airborne transmission therein.
The results DO NOT include short-range airborne exposure (where the physical distance is a significant factor) nor the other known modes of SARS-CoV-2 transmission.
Hence, the output from this model is only valid when the other recommended public health & safety instructions are observed, such as adequate physical distancing, good hand hygiene and other barrier measures.
</p>
@ -44,8 +44,8 @@ We wish to thank CERN’s HSE Unit, Beams Department, Experimental Physics Depar
<p>
Note that this model applies a deterministic approach, i.e., it is assumed at least one person is infected and shedding viruses into the simulated volume.
Nonetheless, it is also important to understand that the absolute risk of infection is uncertain, as it will depend on the probability that someone infected attends the event.
The model is most useful for comparing the impact and effectiveness of different mitigation measures such as ventilation, filtration, exposure time, physical activity and
the size of the room, only considering long-range airborne transmission of COVID-19 in indoor settings.
The model is most useful for comparing the impact and effectiveness of different mitigation measures such as ventilation, filtration, exposure time, physical activity, amount and nature of close-range interactions and
the size of the room, considering both long- and short-range airborne transmission modes of COVID-19 in indoor settings.
</p>
<p>
This tool is designed to be informative, allowing the user to adapt different settings and model the relative impact on the estimated infection probabilities.