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The billions of dollars spent on state-of-the-art sports facilities over the last quarter-century have made high-efficiency air filtration systems more common, thanks in part to the pursuit of green and healthy building certifications. Upgrades will likely increase in the post-coronavirus era, too.
The problem is that even the cleanest of air can’t keep this particular virus from spreading; if someone coughs or sneezes, those droplets are in the air. That means outdoor ballparks have high contaminant potential, too.
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