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  1. The median daily COVID-19 case rate between 15 June and 1 July 2020 was 243 per 100 000. The five counties with the highest percentages of mask wearing were in California, Virginia, and Florida (average IRR score = 0.42; Table 2 ). The average IRR score for the bottom five counties was 0.55, or more rural.

    • 10.22605/RRH6596
    • 2021/07
  2. Jan 21, 2021 · This chart shows the percentage of U.S. adults saying they wear a mask when in public places.

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  4. Jul 17, 2020 · Face Mask Usage by Demographic. COVID-19. by. Willem Roper , Jul 17, 2020. COVID-19 case rates are increasing rapidly in most states in the U.S., however people are reacting to it much differently ...

  5. Apr 14, 2021 · Mean COVID-19 rates for states with at least 75% mask adherence in the preceding month was 109.26 per 100,000 compared to 249.99 per 100,000 for those with less adherence. Our analysis suggests high adherence to mask wearing could be a key factor in reducing the spread of COVID-19.

    • Charlie B. Fischer, Nedghie Adrien, Jeremiah J. Silguero, Julianne J. Hopper, Abir I. Chowdhury, Mar...
    • 10.1371/journal.pone.0249891
    • 2021
    • PLoS One. 2021; 16(4): e0249891.
    • Study Design, Data Sources, and Variables
    • Controls
    • Empirical Approach

    For this cross-sectional study, we collected data from counties or county equivalents (boroughs, parishes, and the District of Columbia) in the US (N = 3142). The data were all available from publicly available sources, and we offer an overview in Table 1. The dataset included all the counties or county equivalents for which information was availab...

    We controlled for a number of factors that could potentially influence Mask Wearing. Women, older individuals, and those living in suburban or urban areas are more likely to wear masks than were their peers . Therefore, in drawing from data available from the County Health Rankings & Roadmaps website, we controlled for the percent of county residen...

    Means, standard deviations, and bivariate correlations were computed for all variables. The data are not independent, as counties are nested within states, and state-level effects concerning health and COVID-19 restrictions could influence the results . As a result, common estimation techniques, such as ordinary least squares regression, could resu...

    • George B. Cunningham, Calvin Nite
    • 2021
  6. May 31, 2022 · We find that population mask wearing notably reduced SARS-CoV-2 transmission (mean mask-wearing levels corresponding to a 19% decrease in R). We use the largest wearing survey (n = 20 million) and obtain our estimates from regions across six continents.

  7. May 11, 2023 · Disposable masks and cloth masks: Untie the strings behind your head or stretch the ear loops and fold the outside corners together. Respirators: Follow the manufacturer’s instructions. If your cloth mask is wet or dirty, put it in a sealed plastic bag until you can wash it. This will keep it from getting moldy.

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