Covid-19 infections spike: Experts agree on masking up and ventilation https://ift.tt/oCGRaqt

"It's important to be sensible and understand the risk factors -- if you're indoors, it's better to wear a mask. If it's crowded, even more so. Without worrying about a particular variant, a good mask, when worn properly, will protect you," says virologist Dr Shahid Jameel, research fellow at Green Templeton College, Oxford.

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