The Necessity of Evaluating the Effectiveness of Wearing the Face Shield With a Mask Only on the Mouth, as a Kind of Physical Precluding to Combat New Coronavirus Outbreak

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Esmaeil Kamyar

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Journal Paper

Paper Information

Journal: JOURNAL OF SCIENCE AND ENGINEERING ELITES Year:2023 | Volume: | Issue: Page(s): 165-185

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Information Journal Paper

Title

The Necessity of Evaluating the Effectiveness of Wearing the Face Shield With a Mask Only on the Mouth, as a Kind of Physical Precluding to Combat New Coronavirus Outbreak

Author(s)

Esmaeil Kamyar | Issue Writer Certificate

Keywords

Face ShieldQ4

Face MaskQ4

CoronavirusQ4

Covid-19Q4

Health and Medical SciencesQ4

Physical PrecludingQ4

Personal Protective EquipmentQ4

Preventive MedicineQ4

Public HealthQ4

Abstract

Given the prospect of Covid-19 outbreak, successive mutations, and the relative and temporary effectiveness of the vaccines, taking health-oriented measures with participatory and proactive approach is required. Along with the measures like vaccination, "Physical Precluding" should be considered as well.-The transmission capability of some new variants of SARS-CoV-2 is substantially high, and an increasing reduction in the effectiveness of solely using Face Masks is alarming. Wearing a Face Shield with a mask that covers both the mouth and the nose under the shield is an effective method of Physical Precluding in usual spaces, but it is not a practical method for many people. Instead, wearing a Face Mask that covers only the mouth under the shield can make it easier.-The most important function of the mask under the shield is to reduce the amount and also the "velocity" of the particles that come out through the mouth. By "reducing the amount and velocity of such particles (by wearing a cover on the mouth under the shield)" and considering "the function of the shield placed in front of the cover" and "the key role of larger particles in the Covid-19 transmission", it is expected any risk of the problematic particles that could come out from around the shield be decreased.-About this, performing a simulation to evaluate the effectiveness of wearing the Face Shield together with various disposable and washable masks (such as economical cloth covers) that only cover the mouth under the shield, as a facilitated method of Physical Precluding by the public, is recommended.

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