Covid-19.
The claim contradicts a number of earlier studies where the consensus appeared to be that children rarely transmitted the virus between themselves or to other people.
This week, 260 employees in one of Georgia's biggest school districts were barred from entering their schools to plan for reopening because they either had the virus or had been in contact with an infected individual.
The disclosure comes after an official report of what appeared to have been a "super-spreader" event, also in Georgia, where more than 200 teenagers attending an overnight YMCA summer camp were also infected. Although the camp, involving about 6oo young people, followed sanitation rules including staff wearing masks, campers were not required to, as local health officials said "relatively large~" groups of children aged betw'eenlsix and 19 slept in communal cabins".