While the overall number of cases appears to be relatively small so far, evidence is emerging of a possible link between the Coronavirus pandemic and a severe inflammatory disease among infants arriving in hospital with fevers and swollen arteries.
Until now, children had been thought to be less vulnerable to the disease than adults.
But UK Health Secretary Matt Hancock said on Tuesday some children with no underlying health issues have died from a rare syndrome thought to be linked to COVID-19.
Separately, doctors in northern Italy have seen unexpectedly significant numbers of children under age 9 with severe cases of what appears to be Kawasaki disease, more common in Asia.
Parents are advised to vigilant while researchers investigate the cases and any link to COVID-19.
