Examples of positive results:

- There are examples of public health successes against Covid-19; for instance, Hong Kong, which has a much higher population density than New York City, had fewer than 100 Covid-related deaths, thanks in part to swift and widespread uptake of masking, augmented by easily accessible testing.

Positives of following precautionary measures 

Advocates state the importance of face masks to reduce future collateral damage in which hospitalization rates and/or mortality rates may increase without them.

University of California, Davis

- Use as a Precautionary Measure
- Blocking of Aerosol Agents
- Reduce Transmission from Asymptotic Individuals

Arguments Supporting the Use of Face Masks

Greenhalgh, T., Schmid, M. B., Czypionka, T., Bassler, D., & Gruer, L. (2020). Face masks for the public during the covid-19 crisis. Bmj, 369.
https://doi.org/10.1136/bmj.m1435

Face masks for the public during the covid-19 crisis

https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public/when-and-how-to-use-masks

Interim Guidance - June 5th, 2020

Coronavirus disease (COVID-19) advice for the public: When and how to use masks

Eikenberry, S. E., Mancuso, M., Iboi, E., Phan, T., Eikenberry, K., Kuang, Y., ... & Gumel, A. B. (2020). To mask or not to mask: Modeling the potential for face mask use by the general public to curtail the COVID-19 pandemic. Infectious Disease Modelling.

https://doi.org/10.1016/j.idm.2020.04.001

To mask or not to mask: Modeling the potential for face mask use by the general public to curtail the COVID-19 pandemic

Use as a Precautionary Measure

The virus particles may remain in the air for several hours; laboratory experiments have shown that surgical masks are effective in blocking such agents.

Blocking of Aerosol Agents

The virus can be transmitted even when an infected person is asymptotic or minimally symptomatic. Face masks can reduce the likelihood that virus particles may spread between health providers and patients in healthcare settings.

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