How easily do kids spread COVID-19?

摘要

It's back-to-school time in the United States, but for the world's leader in coronavirus infections and deaths, what "back to school" means is hardly clear. No other country has attempted to send children to school with corona-virus infection levels as high as they are in some parts of the country. Many large school districts, including those in Los Angeles and Atlanta, have returned to school with all students learning from home. Other districts have opted for models that mix in-person learning with remote classwork. And in some places, such as Connecticut, students will be back in the classroom full time. School districts have been struggling to make the call on how to reopen, given a lack of data on how to reduce risk. One big open question has been: Can children transmit the coronavirus?