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10.1126/science.abg6296

http://scihub22266oqcxt.onion/10.1126/science.abg6296
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34016743!8168616!34016743
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suck abstract from ncbi


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pmid34016743      Science 2021 ; 372 (6549): 1439-43
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  • Face masks effectively limit the probability of SARS-CoV-2 transmission #MMPMID34016743
  • Cheng Y; Ma N; Witt C; Rapp S; Wild PS; Andreae MO; Poschl U; Su H
  • Science 2021[May]; 372 (6549): 1439-43 PMID34016743show ga
  • Airborne transmission by droplets and aerosols is important for the spread of viruses. Face masks are a well-established preventive measure, but their effectiveness for mitigating SARS-CoV-2 transmission is still under debate. We show that variations in mask efficacy can be explained by different regimes of virus abundance and related to population-average infection probability and reproduction number. For SARS-CoV-2, the viral load of infectious individuals can vary by orders of magnitude. We find that most environments and contacts are under conditions of low virus abundance (virus-limited) where surgical masks are effective at preventing virus spread. More advanced masks and other protective equipment are required in potentially virus-rich indoor environments including medical centers and hospitals. Masks are particularly effective in combination with other preventive measures like ventilation and distancing.
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