Children and babies as young as eight months old have been shown to transmit Covid-19 to adults after outbreaks at three childcare centres, according to the Centres for Disease Control and Prevention.
The findings come as schools and daycare facilities across the country increasingly reopen to in-person contact, with the CDC continuing its research for guidance on controlling the spread of coronavirus.
The new report, released late on Friday, studied coronavirus outbreaks at three childcare facilities, attended by 83 kids, in Salt Lake City, Utah from 1 April to 10 July.
Twelve children under the age of 10, who likely contracted the virus at daycare, were found to have infected some of their parents or siblings after returning home, even if they showed no signs or symptoms.