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SARS-CoV-2 Survival on Surfaces. Measurements Optimisation for an Enthalpy-Based Assessment of the Risk

Author

Listed:
  • Angelo Spena

    (Department of Enterprise Engineering, Tor Vergata University of Rome, 00133 Rome, Italy)

  • Leonardo Palombi

    (Catholic University of “Our Lady of Good Counsel”, 1001 Tirana, Albania
    Department of Biomedicine and Prevention, Tor Vergata University of Rome, 00133 Rome, Italy)

  • Mariachiara Carestia

    (Department of Biomedicine and Prevention, Tor Vergata University of Rome, 00133 Rome, Italy)

  • Vincenzo Andrea Spena

    (Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, 00184 Rome, Italy)

  • Francesco Biso

    (Department of Enterprise Engineering, Tor Vergata University of Rome, 00133 Rome, Italy)

Abstract

The present work, based on the results found in the literature, yields a consistent model of SARS-CoV-2 survival on surfaces as environmental conditions, such as temperature and relative humidity, change simultaneously. The Enthalpy method, which has recently been successfully proposed to investigate the viability of airborne viruses using a holistic approach, is found to allow us to take a reasoned reading of the data available on surfaces in the literature. This leads us to identify the domain of conditions of lowest SARS-CoV-2 viability, in a specific enthalpy range between 50 and 60 kJ/Kg dry-air . This range appears well-superimposed with the results we previously obtained from analyses of coronaviruses’ behaviour in aerosols, and may be helpful in dealing with the spread of infections. To steer future investigations, shortcomings and weaknesses emerging from the assessment of viral measurement usually carried out on surfaces are also discussed in detail. Once demonstrated that current laboratory procedures suffer from both high variability and poor standardisation, targeted implementations of standards and improvement of protocols for future investigations are then proposed.

Suggested Citation

  • Angelo Spena & Leonardo Palombi & Mariachiara Carestia & Vincenzo Andrea Spena & Francesco Biso, 2023. "SARS-CoV-2 Survival on Surfaces. Measurements Optimisation for an Enthalpy-Based Assessment of the Risk," IJERPH, MDPI, vol. 20(12), pages 1-16, June.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:12:p:6169-:d:1173891
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    References listed on IDEAS

    as
    1. Angelo Spena & Leonardo Palombi & Massimo Corcione & Alessandro Quintino & Mariachiara Carestia & Vincenzo Andrea Spena, 2020. "Predicting SARS-CoV-2 Weather-Induced Seasonal Virulence from Atmospheric Air Enthalpy," IJERPH, MDPI, vol. 17(23), pages 1-14, December.
    2. Angelo Spena & Leonardo Palombi & Massimo Corcione & Mariachiara Carestia & Vincenzo Andrea Spena, 2020. "On the Optimal Indoor Air Conditions for SARS-CoV-2 Inactivation. An Enthalpy-Based Approach," IJERPH, MDPI, vol. 17(17), pages 1-15, August.
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