The new SARS-CoV-2 variant’s increased transmissibility is believed to come from a change in the spike protein, visible here in yellow under an electron microscope. National Institute of Allergies and Infectious Diseases

How to stay safe with a fast‑spreading new coronavirus variant on the loose

The new SARS-CoV-2 variant is already spreading in the US and could be dominant by March, the CDC warns. Here’s what that means for the masks you choose and how you practice social distancing.
How smoke moves inside a bar or outside in fresh air can help in visualizing how the coronavirus spreads. Shironosova/Getty Images Plus

What a smoky bar can teach us about the ‘6‑foot rule’ during the COVID‑19 pandemic

The 6-foot rule for social distancing doesn’t account for all risks, particularly indoors. Here’s what everyone needs to understand as cooler weather moves more activities inside.
Les aérosols sont constitués de minuscules gouttelettes respiratoires en suspension dans l'air. Jeffrey Coolidge/AFP

Covid‑19 : la diffusion par aérosol, une menace plus grande que l’OMS ne le supposait

Le 6 juillet, plus de 200 scientifiques ont écrit une lettre ouverte à l’OMS, avertissant contre le risque transmission du coronavirus par aérosol. L’institution a depuis revu ses positions.

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