By Lidia Morawska, Donald K. Milton, et al.
This manuscript, “it is time to address airborne transmission of covid-19” was written and supported by 239 experts who are pleading with the governing medical bodies to acknowledge the Airborne route of transmission of SARS-CoV-2. The WHO and CDC have accepted the spread of SARS-CoV-2 by physical contact, by droplets, somewhat by fomites, and by aerosols produced during medical procedures. They have failed to recognize that aerosols in daily life will spread the virus. These scientists feel that by failing to acknowledge airborne transmission and failing to give the general public guidance on how to avoid airborne transmission, the governing bodies are allowing this virus to spread via an unchecked route.
Needless to say, we at AeroShield™ Health have found the aerosols created during dental procedures to be of utmost significance and are working hard to ensure that dental offices do not become transmission hot spots. The WHO and CDC have never denied that aerosols produced during medical procedures can transmit the virus. But now they are being implored to make an even bolder statement about airborne transmission. This makes me believe that the close proximity to high levels of aerosols for prolonged periods during dental procedures with limited ventilation in dental operatories creates an environment very conducive to transmission. And yes, we are all wearing N95 masks, but what about when you take them off, or when they don’t fit perfectly. The added ventilation and filtration of operatory air by the AeroShield™ FLOW seems like less of a luxury and more of a necessity.
I included some excerpts from the manuscript below, but see the following link to read the entire manuscript which was published by Oxford University Press for the Infectious Diseases Society of America... https://academic.oup.com/cid/article/doi/10.1093/cid/ciaa939/5867798
Allison Alexander DMD
“We appeal to the medical community and to the relevant national and international bodies to recognize the potential for airborne spread of COVID-19. There is significant potential for inhalation exposure to viruses in microscopic respiratory droplets (microdroplets) at short to medium distances (up to several meters, or room scale), and we are advocating for the use of preventive measures to mitigate this route of airborne transmission.
Studies by the signatories and other scientists have demonstrated beyond any reasonable doubt that viruses are released during exhalation, talking, and coughing in microdroplets small enough to remain aloft in air and pose a risk of exposure at distances beyond 1 to 2 m from an infected individual”
“Many studies conducted on the spread of other viruses, including respiratory syncytial virus (RSV) , Middle East Respiratory Syndrome coronavirus (MERS-CoV) , and influenza [2,4], show that viable airborne viruses can be exhaled  and/or detected in the indoor environment of infected patients [11-12]. This poses the risk that people sharing such environments can potentially inhale these viruses, resulting in infection and disease. There is every reason to expect that SARS-CoV-2 behaves similarly, and that transmission via airborne microdroplets [10,13] is an important pathway. Viral RNA associated with droplets smaller than 5 μm has been detected in air , and the virus has been shown to maintain infectivity in droplets of this size . Other viruses have been shown to survive equally well, if not better, in aerosols compared to droplets on a surface .”
“Hand washing and social distancing are appropriate, but in our view, insufficient to provide protection from virus-carrying respiratory microdroplets released into the air by infected people. This problem is especially acute in indoor or enclosed environments, particularly those that are crowded and have inadequate ventilation  relative to the number of occupants and extended exposure periods”
Please follow the link above to read the entire manuscript. Published by Oxford University Press for the Infectious Diseases Society of America.