Journal
JOURNAL OF AEROSOL MEDICINE AND PULMONARY DRUG DELIVERY
Volume 33, Issue 4, Pages 230-234Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/jamp.2020.1616
Keywords
exhaled aerosols; influenza; SARS-CoV-2; virus transmission
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Background:The transmission of respiratory viruses such as influenza and corona viruses from one person to another is still not fully understood. Methods:A literature search showed that there is a strong scientific rationale and evidence that viruses are very efficiently spread through aerosols by the patient's breathing only. It is not necessary for the patient to cough or sneeze. Results:The exhaled aerosol particles are generated by normal breathing in the deep lung through reopening of collapsed small airways during inspiration. These mucus/surfactant aerosols (size range between 0.2 and 0.6 mu m) can transport viruses out of the lungs of patients and be present in the room air for hours. Conclusion:These aerosol particles are difficult to filter out of the air; because of their physical properties, new strategies must be developed to protect people from these virus aerosols.
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