The patients were divided in three groups: 46 children younger than five-years-old, 51 children aged five to 17 years, and 48 adults aged 18 to 65 years.
The researchers said understanding transmission potential in children could help guide public health decisions surrounding school and daycare reopenings scheduled to occur in the coming weeks.
In a commentary accompanying the publication of the new studies, deputy editor of JAMA Cardiology Clyde Yancy and section editor Gregg Fonarow call for urgent ongoing research to better understand the cardiovascular complications associated with COVID-19, as preparations may be necessary for what could be another dimension to this pandemic crisis.More news: Joe Biden nears final decision on running mate
Now, new evidence shows that children carry high levels of the SARS-CoV-2 virus even without falling ill, which may impact the spread of the virus to others, especially those who are at high risk of developing severe COVID-19. Further studies are needed to look at the transmissibility of SARS-CoV-2 in children.
As more information on how the virus moves through children (and the adults who live with and care for them), we can hope that the new information will inform any plans for returning to non-virtual schools in the coming months.
Testing revealed that "young children have equivalent or more viral nucleic acid in their upper respiratory tract compared with older children and adults", the researchers wrote.
The authors said this raises concerns because the behavioral habits of young children close together in school or daycare could lead to a serious spread. "That's the key thing - we're still not seeing outbreaks being driven by children to the extent they are driven by older individuals, and that's despite the fact that they have the virus in their nose". Heald-Sargent chose to look back over the several weeks, between late March and late April, to see how common this result was. "It's not surprising to find higher viral loads in children". The study, which did not directly compare itolizumab to a placebo or other treatments, has not yet been peer-reviewed.More news: Animal Crossing New Horizons - How to Get King Tut Mask
"We've known for quite a while that for certain respiratory viruses, younger children are the breeding ground and they're the part of the population that spreads it to the rest of the community", said Smit, who is also the hospital's epidemiologist and the medical director for infection prevention and control. Their computer models assumed that students with positive tests or with COVID-19 symptoms would be moved to an isolation dormitory.
"Our study was not created to prove that younger children spread COVID-19 as much as adults, but it is a possibility". "Any grade-school teacher or pediatrician will tell you, [young children] are pretty effective little vectors of virus transmission, because we get sick a lot in the winter from these kids", she says to CNN.More news: CDC: Hundreds of kids infected with coronavirus within days at overnight camp