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  1. Take steps for cleaner air. This can mean bringing in fresh outside air, purifying indoor air, or gathering outdoors. Virus particles do not build up in the air outdoors as much as they do indoors. How it works Some germs spread in the air between people. This happens more easily in indoor, crowded spaces with poor airflow.
    www.cdc.gov/respiratory-viruses/prevention/air-quality.html
    www.cdc.gov/respiratory-viruses/prevention/air-quality.html
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