COVID-19 can easily spread between people, especially indoors and poorly ventilated spaces. When an infected person coughs, sneezes or speaks loudly, up to millions of invisible virus particles are released into the surroundings via respiratory droplets, where they can remain infectious for days. While the larger droplets settle on all nearby surfaces, smaller droplets can remain suspended for up to 20 minutes in the air or up to 48 hours on surfaces indoors. Others can catch COVID-19 when these infected droplets get into their mouth, nose or eyes
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