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In the , one burning question has been whether and how efficiently children can spread the  to others.

A large new study from South Korea offers an answer: Children younger than age 10 transmit to others much less often than adults do, but the risk is not zero. And those between the ages of 10-19 can spread the virus at least as well as adults do.

The findings suggest that as schools reopen, communities will see clusters of infection take root that include children of all ages, several experts cautioned.