Children with Covid-19 threaten recovery from the pandemic -- sparking increased scrutiny of their cases from scientists and policy makers seeking clues about the new coronavirus’ spread and virulence.
While infections of those under 18 compose a small portion of the worldwide total, they number in the thousands, and in recent days have become the subject of a National Institutes of Health study. There have also been reports in the U.S., U.K. and Europe of a mysterious condition among children.
