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micron variant up to 3 times more infectious than Delta, CDC says

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“With the recommended shorter isolation and quarantine periods, it is critical that people continue to wear well-fitting masks and take additional precautions for 5 days after leaving isolation or quarantine,” it adds.

“Modeling data from the United Kingdom reinforce the importance of mask use; after the 5th day after a positive test, an estimated 31% of persons remain infectious,” the CDC said. It cites a pre-print study posted online on Dec. 24.

“Mask use and layered prevention strategies, such as receiving all recommended vaccination and booster doses, physical distancing, screening testing, and improved ventilation, are key to preventing COVID-19 and decreasing transmission," the CDC continued.

For the estimate of transmissibility, the CDC cites a study published in the Journal of Medical Virology. Kimihito Ito of Japan’s Hokkaido University and colleagues used data including 758 cases of Omicron variant infection confirmed in Denmark. They developed a method to calculate the infectiousness of a variant based on how many times it is detected over a certain period of time. ...

 

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