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Wednesday, June 10, 2020

Nearly Half of Coronavirus Spread May Be Traced to People Without Any Symptoms

One of the more insidious features of the new coronavirus behind COVID-19 is its ability to settle into unsuspecting hosts who never show signs of being sick but are able to spread the virus to others.
In a study published June 3 in the Annals of Internal Medicine, researchers at the Scripps Research Translational Institute reviewed data from 16 different groups of COVID-19 patients from around the world to get a better idea of how many cases of coronavirus can likely be traced to people who spread the virus without ever knowing they were infected. Their conclusion: at minimum, 30%, and more likely 40% to 45%...

...Another concern, says Topol, is that the virus may be damaging the bodies of asymptomatic in other, silent ways. Among the 331 passengers on the Diamond Princess cruise ship who tested positive but did not have symptoms, 76 people had CT scans of their lungs and nearly half showed signs of lung tissue damage typical of coronavirus infection. “People who are getting infection without symptoms are actually doing a lot of damage to their bodies and they don’t know it,” says Topol. Another small study in South Korea that studied 10 asymptomatic people from a group of 139 COVID-19 patients supports these findings...

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