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Largest study on masks and Covid-19 demonstrates their effectivenes…
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New Report Indicates Effectiveness of Masks in Preventing Spread of COVID-19
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114K views · 705 reactions | A study at the Mater Hospital in Dublin has highlighted the effectiveness of masks and face coverings in fighting #Covid19, while showing up a potential issue with visors | https://bit.ly/340QGmE | RTÉ News | Facebook
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14K views · 21 reactions | Why are we encouraging everyone to...
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