A cluster randomised trial of cloth masks compared with medical masks in healthcare workers

Source: A cluster randomised trial of cloth masks compared with medical masks in healthcare workers

… the results caution against the use of cloth masks. This is an important finding to inform occupational health and safety. Moisture retention, reuse of cloth masks and poor filtration may result in increased risk of infection.

Penetration of cloth masks by particles was almost 97% and medical masks 44%

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Long term immunity more likely - YouTube

Mon Jul 20 , 2020
https://www.nature.com/articles/s41586-020-2550-z_reference.pdf Study in Nature is showing that the memory of the virus from other coronoviruses are detected in T cells 17 years later.

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