More than half a million children have been diagnosed with the novel coronavirus disease across the US.

Iran PressAmerica: According to the American Academy of Pediatrics and the Children's Hospital Association, 70,630 new child cases were reported from August 20 through September 3. This is a 16% increase in child cases over two weeks, bringing up the total to at least 513,415 cases, the groups said in their weekly report on pediatric coronavirus cases.

"These numbers are a chilling reminder of why we need to take this virus seriously," American Academy of Pediatrics President Sally Goza said in a news release. "While much remains unknown about COVID-19, we do know that the spread among children reflects what is happening in the broader communities," she added.

"A disproportionate number of cases are reported in Black and Hispanic children and in places where there is high poverty. We must work harder to address societal inequities that contribute to these disparities," CNN reported.

Children represent nearly 10% of all reported cases in the US, according to the report. The child cases are likely underreported because the tally relies on state data that is inconsistently collected.

"This rapid rise in positive cases occurred over the summer, and as the weather cools, we know people will spend more time indoors," Sean O'Leary, the vice-chair of the AAP Committee on Infectious Diseases, said in a news release.

A study published Tuesday in JAMA Network Open found that children hospitalized with COVID-19 were likely to have a fever, aches, diarrhea, and vomiting.

Children with COVID-19 also tended to be older and have at least one underlying health condition.

As of Tuesday evening, more than 6,344,700 people in the United States have been infected with the coronavirus and at least 189,500 have died, according to a New York Times database.

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