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SARS-CoV-2 in the Air: What’s Known and What Isn’t
Evidence suggests that COVID-19 is primarily an airborne disease. Yet the details of how transmission occurs are still debated and frequently misunderstood.
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Behind the headlines
Research findings and data from the National Library of Medicine
PubMed articles
Outdoor Transmission of SARS-CoV-2 and Other Respiratory Viruses: A Systematic Review
Existing evidence supports the wide-held belief that risk of SARS-CoV-2 transmission is lower outdoors but there are significant gaps in our understanding of specific pat …
A SARS-CoV-2 Cluster in an Acute Care Hospital
SARS-CoV-2 clusters can occur in hospitals despite robust infection control policies. Insights from this cluster may inform additional measures to protect patients and st …
Long-distance airborne dispersal of SARS-CoV-2 in COVID-19 wards
Evidence suggests that SARS-CoV-2, as well as other coronaviruses, can be dispersed and potentially transmitted by aerosols directly or via ventilation systems. We theref …
N95 respirator and surgical mask effectiveness against respiratory viral illnesses in the healthcare setting: A systematic review and meta-analysis
N95 respirator use was associated with fewer viral infectious episodes for healthcare workers compared with surgical masks. The N95 respirator was most effective in reduc …
Dismantling myths on the airborne transmission of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)
The coronavirus disease 2019 (COVID-19) pandemic has caused untold disruption throughout the world. Understanding the mechanisms for transmission of severe acute respirat …
Exposure to influenza virus aerosols during routine patient care
HCPs within 1.829 m of patients with influenza could be exposed to infectious doses of influenza virus, primarily in small-particle aerosols. This finding questions the c …
Risk of Coronavirus Disease 2019 Transmission in Train Passengers: an Epidemiological and Modeling Study
COVID-19 has a high transmission risk among train passengers, but this risk shows significant differences with co-travel time and seat location. During disease outbreaks, …
Airborne Transmission of SARS-CoV-2 Delta Variant within Tightly Monitored Isolation Facility, New Zealand (Aotearoa)
In New Zealand, international arrivals are quarantined and undergo severe acute respiratory syndrome coronavirus 2 screening; those who test positive are transferred to a …
Clustering and superspreading potential of SARS-CoV-2 infections in Hong Kong
Superspreading events (SSEs) have characterized previous epidemics of severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome corona …
Airborne SARS-CoV-2 Is Rapidly Inactivated by Simulated Sunlight
Aerosols represent a potential transmission route of COVID-19. This study examined effect of simulated sunlight, relative humidity, and suspension matrix on stability of …
Seroconversion and fever are dose-dependent in a nonhuman primate model of inhalational COVID-19
While evidence exists supporting the potential for aerosol transmission of SARS-CoV-2, the infectious dose by inhalation remains unknown. In the present study, the probab …
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