More Than Half Of Covid Cases Spread By Asymptomatic Carriers

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A new model from the Centers for Disease Control and Prevention shows that those who are infected with but show no signs of COVID-19 account for more than half of all coronavirus cases.

The model, published in JAMA Network Open on Thursday, shows that an estimated 59% of all coronavirus cases come from those who are asymptomatic, including 35% who are presymptomatic — meaning they initially don’t show symptoms but eventually develop them — and 24% who never develop any signs of symptoms of COVID-19.

“The findings of this study suggest that the identification and isolation of persons with symptomatic COVID-19 alone will not control the ongoing spread of SARS-CoV-2,” the researchers wrote when describing their findings.

The model supports the preventative measures experts have recommended for months, such as wearing a face covering and practicing social distancing.



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Chuck comes from a lineage of journalism. He has written for some of the webs most popular news sites. He enjoys spending time outdoors, bull riding, and collecting old vinyl records. Roll Tide!