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Related Concept Videos

Transmission-based Precautions II: Airborne and Protective Environment01:25

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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

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Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
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Suctioning the Nasopharyngeal Airway01:29

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Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
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Related Experiment Video

Updated: Dec 15, 2025

Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples
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Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples

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Air filtration and SARS-CoV-2.

Yevgen Nazarenko1

  • 1Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada.

Epidemiology and Health
|July 15, 2020
PubMed
Summary

Understanding air filtration is crucial for managing coronavirus disease 2019 (COVID-19) spread. Proper use of air filters, like HEPA, effectively removes infectious aerosol particles carrying SARS-CoV-2.

Area of Science:

  • Environmental Health
  • Infectious Disease Control
  • Aerosol Science

Background:

  • Air filtration is a key strategy for mitigating coronavirus disease 2019 (COVID-19) transmission.
  • Misconceptions about air filtration principles hinder effective deployment against airborne SARS-CoV-2.
  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can remain airborne, necessitating efficient particle removal.

Purpose of the Study:

  • To clarify the principles of air filtration for managing COVID-19.
  • To address uncertainties regarding the effectiveness of air filtration against infectious aerosols.
  • To inform best practices for utilizing air filtration in COVID-19 control.

Main Methods:

  • Review of scientific literature on air filtration mechanisms and aerosol dynamics.
Keywords:
AerosolsCOVID-19CoronavirusFiltrationHEPAMPPS

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  • Analysis of SARS-CoV-2 characteristics and its interaction with airborne particles.
  • Evaluation of different air filter types, including High-Efficiency Particle Arrestance (HEPA) filters.

    • Main Results:

    • Air filtration effectively removes aerosol particles, including those harboring SARS-CoV-2.
    • High-Efficiency Particle Arrestance (HEPA) filters are recommended for their effectiveness.
    • Understanding particle-filter interactions is key to optimizing air filtration performance.

    Conclusions:

    • A clear understanding of air filtration is essential for effective COVID-19 management.
    • Air filtration, particularly using HEPA filters, plays a vital role in reducing SARS-CoV-2 transmission.
    • Implementing appropriate air filtration strategies is critical for public health interventions.