@doctorpallavi @WestNorfolkBC Hepa filters don't affect covid spread. You should get your facts straight. https://t.co/bNa7sM5x1W
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@agilecoachjoerg @waescherheinz Luftfilteranlagen sind eher kontraproduktiv. Effect of portable HEPA filters on COVID-19 period prevalence: an observational quasi-interventional study in German kindergartens https://t.co/dGLneHInnc
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RT @keisuke4713: 🇩🇪高性能換気filter備えた幼稚園の方が 何もしていない幼稚園より、コロナ感染率⬆️⬆️ https://t.co/oqpaRyAvkF portable HEPA filter影響:🇩🇪幼稚園 https://t.co/UBp5BPUDg…
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@justthore Weil HEPA Filter NICHTS gegen Covid bringen? Hier mal eine Studie dazu: https://t.co/au9aS97i2h Abbildung 1 angucken: HePa Filter ERHÖHEN das Covid19 Risiko. LOL: