Many epidemiologists suspect mild symptoms may simply be masking that children are getting infected the same rates as adults.

New data published last week by Chinese researchers showed authorities searching for coronavirus cases based on symptoms found lower rates in kids.

But when they relied on contact tracing — testing people who come in contact with a confirmed case — children seemed to be getting infected at the same rate as adults.

> > > Only widespread testing with contact tracing, as in South Korea, reveals the full number of infections.