The US Centers for Disease Control and Prevention on Friday updated its explanations on how coronavirus is transmitted, stressing that inhalation is one of the main ways the virus is spread and placing less emphasis on the risk of picking it up from surfaces.

The changes to the CDC website are in line with a gradual shift in the agency's advice to stress that the virus spreads through the air -- either to be breathed in, to get into the eyes or to settle onto surfaces that people later touch.

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