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  1. Aug 2022
  2. www.star-telegram.com www.star-telegram.com
    This Fort Worth inventor created a DIY air filter that traps coronavirus particles
    1
    1. jackiekrauss 29 Aug 2022

      Mccarthy, C. (2022, February 22). This Fort Worth inventor created a DIY air filter that traps coronavirus particles. Fort Worth Star-Telegram. https://www.star-telegram.com/news/local/crossroads-lab/article258052148.html

      is:news lang:en COVID-19 Fort Worth inventor DIY air filter Omicron aerosol particle air quality Corsi-Rosenthal box Jim Rosenthal indoor air air flow virus pathogen enclosed space
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    star-telegram.com/news/local/crossroads-lab/article258052148.html
  3. Sep 2020
  4. www.ezekielemanuel.com www.ezekielemanuel.com
    COVID-19 Activity Risk Levels
    1
    1. ErikStuchly 04 Sep 2020

      COVID-19 Activity Risk Levels. (n.d.). Ezekiel Emanuel | COVID-19 Activity Risk Levels. Retrieved July 8, 2020, from http://www.ezekielemanuel.com/writing/all-articles/2020/06/30/covid-19-activity-risk-levels

      is:webpage COVID-19 risk index social interaction social gathering exhalation enclosed space visualization guidance public health prevention social distancing guide
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    ezekielemanuel.com/writing/all-articles/2020/06/30/covid-19-activity-risk-levels