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       #Post#: 67--------------------------------------------------
       masks
       By: gsgs Date: February 7, 2020, 9:35 am
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       protective effect of masks and respirators against clinical
       respiratory illness (CRI)
       (risk ratio [RR] = 0.59; 95% confidence interval [CI]:0.46–0.77)
       and influenza-like
       illness (ILI) (RR = 0.34; 95% CI:0.14–0.82). Compared to masks,
       N95 respirators
       conferred superior protection against CRI (RR = 0.47; 95% CI:
       0.36–0.62) and
       laboratory-confirmed bacterial (RR = 0.46; 95% CI: 0.34–0.62),
       but not viral infections
       or ILI. Meta-analysis of observational studies provided evidence
       of a protective effect
       of masks (OR = 0.13; 95% CI: 0.03–0.62) and respirators (OR =
       0.12; 95% CI: 0.06–0.26)
       against severe acute respiratory syndrome (SARS).
  HTML https://academic.oup.com/cid/article/65/11/1934/4068747
       #Post#: 139--------------------------------------------------
       Re: masks
       By: gsgs Date: March 1, 2020, 7:20 pm
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       good website about masks :
  HTML https://smartairfilters.com/en/blog/coronavirus-pollution-masks-n95-surgical-mask/
       #Post#: 171--------------------------------------------------
       Re: masks
       By: gsgs Date: March 20, 2020, 9:22 pm
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  HTML https://www.ncbi.nlm.nih.gov/pubmed/30229968
       2018
       It was found that a 50% compliance in donning the device
       resulted in a significant
       (at least 50% prevalence and 20% cumulative incidence) reduction
       in risk for fitted
       and unfitted N95 respirators, high-filtration surgical masks,
       and both low-filtration
       and high-filtration pediatric masks. An 80% compliance rate
       essentially eliminated
       the influenza outbreak. T
       #Post#: 179--------------------------------------------------
       Re: masks
       By: gsgs Date: March 24, 2020, 6:50 am
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       Stanford: N95 masks can be decontaminated without decreasing
       filtration efficiency
       using 70C heat for 30 min. Alcohol and bleach should not be
       used. Report here if you click on the link.
  HTML https://www.covid19ether.com/blog/c/0/i/43928911/n95-mask-can-be-decontaminated-without-decreasing-filtration-efficiency
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