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The World Health Organization has been at the forefront of proposing how COVID-19 is transmitted, with the main theory being that one person becomes infected by taking in relatively large droplets expelled when someone with the virus coughs, sneezes, speaks, etc. However, 239 scientists from 32 countries signed a letter claiming that even smaller particles can carry the virus—so small that they’re essentially wafting through the air from one side of a room to another, ready to be inhaled by anyone in their path. The WHO has expressed skepticism over the scientists’ claim, saying the evidence is lacking, but says it will investigate further.
Think You Know How COVID-19 Is Transmitted? Hundreds of Scientists Suggest You Think Again