More than half of Covid-19 transmission comes from people with no symptoms, study suggests

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CNN: More than half of Covid-19 cases might have been transmitted by people not showing symptoms, according to a new study from researchers at the US Centers for Disease Control and Prevention.

It’s a model, not a real-life study, but based on data from eight studies done in China, about 59% of all transmission came from people without symptoms, the CDC team found.

“Across a range of plausible scenarios, at least 50% of transmission was estimated to have occurred from persons without symptoms,” the team wrote in the journal JAMA Network Open on Thursday.
The model showed that about 59% of all transmission came from people without symptoms, which broke down to 35% from those who have not developed symptoms yet — are presymptomatic — and 24% from people who never develop symptoms.
Of course, the model provides only estimates about the spread of Covid-19 and more research is needed to determine whether the findings would be similar in the real world.
In the real world, the researchers wrote, “Measures such as mask wearing and social distancing empower individuals to protect themselves and, if infected, to reduce risk to their communities.”
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Editorial Staff
Editorial Staff
Our Editorial Staff at St. Lucia Times is a team publishing news and other articles to over 200,000 regular monthly readers in Saint Lucia and in over 150 other countries worldwide.

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