From article;
Twelve kids who likely caught Covid-19 at three child care centers in Utah went on to spread the virus elsewhere and infected some parents and siblings, according to a new study published Friday by the Centers for Disease Control and Prevention.
Twelve children became infected from someone else at day care, but most had mild to no symptoms. Through detailed contact tracing, investigators were able to determine that those children then spread the virus to at least 1 in 4 people they were in close contact with outside of the child care facility. Those contacts usually included mothers and siblings. In one case, an 8-month-old baby appears to have spread COVID-19 acquired at day care to both parents. In one case, a parent had to be hospitalized.