10 Reasons Airborne Transmission of SARS-CoV-2 Appears Airtight
The dominance of airborne transmission is supported by long-range transmission observed at super-spreader events. Long-range transmission has been reported among rooms at COVID-19 quarantine hotels, settings where infected people never spent time in the same room. Asymptomatic individuals account for an estimated 33% to 59% of SARS-CoV-2 transmission, and could be spreading the virus through speaking, which produces thousands of aerosol particles and few large droplets. Transmission outdoors and in well-ventilated indoor spaces is lower than in enclosed spaces. Nosocomial infections are reported in healthcare settings where protective measures address large droplets but not aerosols. Viable SARS-CoV-2 has been detected in the air of hospital rooms and in the car of an infected person. Investigators found SARS-CoV-2 in hospital air filters and building ducts. It's not just humans — infected animals can infect animals in other cages connected only through an air duct. No strong evi...