The boy had no other chronic health conditions, according to data released by the state. The case is from Chatham County, which includes Savannah, the Georgia Department of Public Health reported.
One of the Centers for Disease Control and Prevention reports looked at children with COVID-19 who needed hospitalization. Hispanic children were hospitalized at a rate eight times higher than white kids, and Black children were hospitalized at a rate five times higher, it found.
The second report examined cases of a rare virus-associated syndrome in kids. It found that nearly three-quarters of the children with the syndrome were either Hispanic or Black, well above their representation in the general population.
The coronavirus has exposed racial fractures in the U.S. health care system, as Black, Hispanic and Native Americans have been hospitalized and killed by COVID-19 at far higher rates than other groups.
Meanwhile, the impact of the virus on children has become a political issue. President Donald Trump and some other administration officials have been pushing schools to re-open, a step that would allow more parents to return to work and the economy to pick up.
On Wednesday, Facebook deleted a post by Trump for violating its policy against spreading misinformation about the coronavirus. The post featured a link to a Fox News video in which Trump says children are "virtually immune" to the virus.
The vast majority of coronavirus cases and deaths have been in adults, and kids are considered less likely to have serious symptoms when they're infected. Of the nearly 5 million cases reported in the U.S. as of Wednesday, about 265,000 were in children 17 and under - about 5%. Of the more than 156,000 deaths reported at that time, 77 were children - about 0.05%.
But Friday's CDC reports are a "gut punch" reminder that some children are getting seriously ill and dying, said Carrie Henning-Smith, a University of Minnesota researcher who focuses on health disparities.
"It's clear from these studies, and from other emerging research, that kids are not immune," she said. "Kids can pass along COVID, and they can also suffer the effects of it."
She said the studies should give community leaders pause about opening schools. "We need to be really, really careful. We are potentially talking about putting children in unsafe situations," Henning-Smith said.
The first report is based on cases received from hospitals in 14 states. The researchers counted 576 hospitalizations of kids from March 1 through July 25 of this year. The report did not have detailed medical information on all of them, but at least 12 were sick enough to need a machine to help them breathe. One died.
The hospitalization rate for Hispanic children was about 16.4 per 100,000. The rate for Black children was 10.5 per 100,000, and for white kids it was 2.1 per 100,000.
Information about underlying medical conditions was available for 222 of 576 children involved in the study. In that subset, 42.3% of children had one more pre-existing condition, suggesting that underlying conditions put a child at a higher risk of hospitalization associated with COVID-19.
Underlying conditions reported include obesity (37.8%), chronic lung disease (18%) and, in infants, premature birth (15.4%).
The reported death was a child with several underlying conditions, the report said.
A number of possible factors could explain the disparities, said Dr. Cyrus Shahpar, who oversees epidemic prevention efforts for a not-for-profit data and advocacy organization called Resolve to Save Lives.
Larger percentages of Hispanic and Black kids may go to hospital emergency rooms when they're sick, which could be driven by difficulty getting into - or paying for - doctor's office visits. That lack of access to regular health-care could lead to more severe illness, he suggested.
The second CDC report focused on 570 kids diagnosed with a rare coronavirus-linked inflammatory condition. Eight of them died.
Some children with the syndrome have symptoms resembling Kawasaki disease, another rare childhood condition that can cause swelling and heart problems. Other symptoms include fever, abdominal pain, vomiting, diarrhea, neck pain, rash, bloodshot eyes or feeling extra tired.
In the study, many of the patients with the condition had severe complications, including heart problems and kidney damage. Nearly two-thirds of the cases overall were admitted to intensive care units, and the average ICU stay was five days.
The CDC report covered illnesses that began from mid-February to mid-July. Forty states reported cases.
The report found that 13% of kids with the condition were white, while more than 40% were Hispanic and 33% were Black. Overall, about half of U.S. children are white, around 25% Hispanic and about 14% are Black, according to population estimates.
Scientists are still learning about the condition. Experts say genetics has nothing to do with why some racial and ethnic groups are more likely to be infected by the virus, get seriously sick from it or die from it. But it's not yet clear if genetics play a role in the childhood inflammation condition, Shahpar said.
ABC Owned Television Stations contributed to this report.