A massive contact-tracing study of nearly 700,000 people in India found that children are spreading the coronavirus amongst themselves and also to adults. '[Many] kids are silent spreaders,' says one the study's lead authors.
"We've never had a good handle on [superspreaders], and certainly no large-scale study," he says."Here in this study, we found that 8% of the people who were infected were responsible for 60% of the infections that grew out of these primary cases."
One of the big questions in this pandemic is how much of a role do children play in transmission of the virus. It's been known that they get infected. It's been known that they don't tend to get as sick or die at anywhere near the rates of older people. What's been unclear is how much kids contribute to spreading COVID-19 to the rest of the community.
"First, this is a study that shows that children do indeed spread the virus to other children," she says."This will have major implications for kids returning to classrooms, to sports and to other activities where kids tend to be in close contact to each other. I think we need more robust contact tracing studies like this, especially in children, to have a really good understanding of the transmission dynamics in this age group.
"Some people think that contact tracing is only useful when it's a small outbreak and you're trying to end it quickly," she says."As COVID spread quickly across the country, some people started to say, 'Well, this isn't a good use of our time in public health when in some states there's widespread transmission.' This study shows the opposite."
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