Hidden benefit: Face masks may reduce severity of COVID-19 and pressure on health systems, researchers find - Brighter World

Researchers have developed a model to investigate COVID-19 variolation — an incidental form of immunization achieved by inhaling smaller doses of the virus than would be inhaled without a mask.

McMaster  researchers who study the dynamics of infectious disease transmission have investigated the population-level consequences of variolation: a potentially significant and unobvious benefit of … [+2766 chars]

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