Face Masks Effectively Limit the Probability of SARS-CoV-2 Transmission

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A Harvard Trained Infectious diseases Specialist, Mitchell Tsai claims that “Under virus-rich regime (e.g., virus concentration is 100 times of the 50% infection dose), wearing face masks cannot effectively lower the infection probability.

In contrast, under virus-limited regime (e.g., virus concentration is equivalent to or lower than the 50% infection dose), wearing face masks can lead to a substantial reduction in the infection probability.” 

For more: https://www.science.org/doi/full/10.1126/science.abg6296






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