This article, shows the different ways COVID-19 can be transmitted in the healthcare environment. It establishes a difference between droplet, inhalation and contact. It showcases the importance of respiratory protection when being close to a COVID-19 patients
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To quote this article in bibliography:
Jones, Rachael. “Relative contributions of transmission routes for COVID-19 among healthcare personnel providing patient care." Journal of Occupational an Environmental Hygiene 17, no. 9 (2020): 408-415. doi: https://doi.org/10.1016/j.jtho.2020.02.010