Credit: Associated Press
Above: An electronic sign on Santa Monica Boulevard reminds people to wear masks to limit the spread of coronavirus, Thursday, April 16, 2020, in Beverly Hills, Calif.
New analysis from Scripps Research has found that anywhere from 30 to 40% of people with coronavirus are asymptomatic, but that doesn't mean they aren’t impacted by the disease.
Scripps Research cardiologist Eric Topol and his colleagues looked at research on over a dozen cohorts of coronavirus patients around the world. He found many of the patients that were asymptomatic still incurred lung abnormalities.
"People can go through a whole infection and not know it at all," he said.
"But the other thing that we uncovered that was a surprise to us, and I don't think most people know this, is that even though you don't have symptoms, which is silent enough as it is, there's another level of silence, which is you can have internal organ damage and not know it."
One study looked at CT scans conducted individuals aboard the Diamond Princess cruise ship. In that case, 54% of 76 asymptomatic individuals showed significant subclinical lung abnormalities
Topol says the study also shows that many more people are spreading coronavirus without even knowing.
For example, in a study of more than 3,000 prison inmates who tested positive for coronavirus, around 96% of those cases were asymptomatic.
"In the United States, we were very slow to get testing ramped up. Even now, it's not ideal. So some people were under the radar because they didn't get a test," he said.
Topol says a lot of cities are opening up quickly. But the research shows the need for a cautious approach and more studies on how coronavirus affects internal organs.
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Shalina Chatlani
Science and Technology Reporter
I cover all things science and technology — from the biotech industry in San Diego to rooftop solar energy on new homes. I'm interested in covering the human side of science and technology, like barriers to entry for people of color or gender equity issues on biotech boards.
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