Infection Control and Ventilation

UV inactivation of bacteria and viruses on surfaces: mechanistic insights and testing method comparisons

This study compares UV inactivation of bacteria and viruses on surfaces using different lamps, deposition, and extraction methods, finding wavelength and deposition effects on inactivation efficiency.

Relative humidity differentially modulates decay of structurally distinct respiratory viruses in deposited human saliva particles

The paper examines how relative humidity affects the decay of three respiratory viruses in human saliva particles, finding virus-specific persistence patterns under different humidity conditions.

Material-specific quarantine durations for SARS-CoV-2 inactivation on musical instruments and music-related materials

This study determines SARS-CoV-2 inactivation times on musical materials, showing variability based on porosity and composition, with non-porous surfaces clearing virus in 3 days and porous ones requiring up to 7 days.

Intermediate Relative Humidity Preserves Respiratory Syncytial Virus via a Semi-Solid Bioaerosol State

This study shows that intermediate relative humidity preserves RSV in semi-solid bioaerosol states, while low humidity causes efflorescence and reduces infectivity.

Rate of osmotic pressure change in drying saliva microdroplets drives inactivation of surrogate respiratory bacteria

This study shows that the rate of osmotic pressure change during droplet evaporation predicts bacterial inactivation in drying respiratory droplets.

Condensate-Like Organization in Respiratory Aerosols Modulates the Dynamics of an Airborne Virus

This study uses molecular dynamics simulations to show how respiratory aerosols create structured microenvironments that influence SARS-CoV-2 stability and spike dynamics.

Inactivation of Airborne Pathogen Surrogates by Triethylene Glycol

This paper demonstrates that aerosolized triethylene glycol effectively inactivates airborne pathogens at safe concentrations, highlighting its potential as a mitigation strategy for airborne disease transmission.

Clean Air Travel: Evaluation of Mask-Free Alternatives to N95 During the Delhi "Air Emergency"

The paper evaluates mask-free alternatives to N95 respirators, demonstrating high filtration efficiency with portable air purifiers in various settings.

Viral transport in evaporating sessile model respiratory droplets

The paper experimentally shows that viral particles in evaporating respiratory droplets aggregate in protein-rich regions, outside salt crystals, and links this to internal flow dynamics.

The Susceptibility of Airborne SARS-CoV-2 to Far-UVC Irradiation

This study quantifies how effectively far-UVC light inactivates airborne SARS-CoV-2 under different humidity levels and demonstrates its potential for disinfection in occupied spaces.

Unravelling the Dynamics of Bacterial-Laden Respiratory Droplets: Epidemiological Transfer from Fomites to Susceptible Host

This study investigates how respiratory droplets containing Pseudomonas aeruginosa transfer pathogens via surfaces, finding increased viability with mucin and significant transfer at high humidity.

Evaporation and pathogenesis of levitated bacteria-laden surrogate respiratory fluid droplets: At different relative humidity and evaporation stages

This study examines how relative humidity and evaporation stages affect bacterial survival and infectivity in respiratory droplets under different evaporation modes.

SARS-CoV-2 Survival on Skin and its Transfer from Contaminated Surfaces

This study examines SARS-CoV-2 transfer efficiency from different surfaces to human skin and its survival on skin under varying temperatures.

Effect of carrier droplet size and shape at different viral loads on virus stability during environmental drying

This study compares virus viability in spherical (airborne) and flat (fomite) droplets under different viral loads and surface types, finding higher viability in spherical droplets and increased risk from high viral loads on fomites.

Comparative Aerosol Persistence of Hypermucoid Klebsiella pneumoniae

This study examines the aerosol persistence of K. pneumoniae strains, finding that both laboratory and clinical strains remain viable for up to 32 hours in air.

Dependence of aerosol-borne influenza A virus infectivity on relative humidity and aerosol composition

This study investigates how relative humidity and aerosol composition affect influenza A virus infectivity in aerosol particles, finding that low humidity and efflorescence preserve infectivity longer than intermediate humidity conditions.

Impact of Organic Compounds on the Stability of Influenza A Virus in deposited 1-ul droplets

This study examines how organic compounds affect the stability of influenza A virus in droplets, finding that proteins enhance virus stability by altering drying dynamics and efflorescence RH.

Aerosol Formation During Processing of Potentially Infectious Samples on Roche Immunochemistry Analyzers (cobas e analyzers) and in an End-to-End Laboratory Workflow to Model SARS-CoV-2 Infection Risk for Laboratory Operators

This study assesses aerosol formation during infectious sample processing on Roche analyzers and in a lab workflow, using HBsAg as a surrogate for SARS-CoV-2, finding low aerosol production with remote infection risk.

Simulation of aerosol dispersion during medical examinations

This study simulates aerosol dispersion during medical procedures and finds that surgical masks reduce particle spread, but exposure remains high during certain procedures unless patients wear masks.

Irradiation of UVC LED at 277 nm inactivates coronaviruses by photodegradation of spike protein.

This study compares the effectiveness of different UVC wavelengths in inactivating coronaviruses, finding that 277-nm UVC LED is most effective due to spike protein degradation.

Air and surface contamination in non-health care settings among 641 environmental specimens of 39 COVID-19 cases

The paper investigates SARS-CoV-2 contamination in environmental surfaces and air from 39 COVID-19 cases, finding 3.1% of 641 specimens positive, predominantly in toilets.