Community-based COVID-19 testing site highlight importance of understanding the virus'

December 21, 2020

WASHINGTON - (December 18, 2020) A new study looking at the results of testing children for COVID-19 through a Children's National Hospital community-based testing site found that one in four patients had a positive test. The findings, reported online Dec. 18 in The Journal of Pediatrics, reinforce that children and young adults are impacted by the virus more than originally believed, and that the continued understanding of their role in transmitting COVID-19 is essential to getting the virus under control.

Of the 1,445 patients tested at the specimen collection site for SARS-CoV-2 virus between March 21 and May 16, 2020, the median age was 8 years old, and more than 34% of positive patients were Hispanic, followed by non-Hispanic Black and non-Hispanic white. The daily positivity rate increased over the study period, from 5.4% during the first week to a peak of 47.4% in May. Children and adolescents were referred to the testing site because of risk of exposure or mild symptoms.

"We knew that community-based testing sites were key in minimizing exposure risk to other patients and health care workers, preserving PPE, centralizing specimen collection services, mitigating acute care site overcrowding and informing our community of the burden caused by this disease," says Joelle Simpson, M.D., medical director of Emergency Preparedness at Children's National.

Drive-through/walk-up testing sites outside of a traditional acute care setting have emerged around the world to meet the need for testing mildly ill or asymptomatic individuals. In March, Children's National Hospital opened a drive-up/walk-up location - one of the first exclusively pediatric testing sites for the virus in the U.S. -- where primary care doctors in the Washington, D.C., region could refer young patients for COVID-19 specimen collection and testing.

"At first, children were not the target of testing initiatives, but it is clear that making testing available to pediatric patients early was a very important part of the pandemic response," says Meghan Delaney, D.O., M.P.H., chief of Pathology and Laboratory Medicine at Children's National. "Not only can children get severe disease, they can be part of positive clusters with the adults they live with. The knowledge we have gained by testing many thousands of children over the pandemic has provided key information."

Compared with non-Hispanic white children and after adjustments for age, sex and distance of residence from specimen collection site, minority children had a higher likelihood of infection.

"We wanted to identify the features of children tested at this site who did not require acute medical care and be able to compare demographic and clinical differences between patients who tested positive and negative for COVID-19," says Dr. Simpson.

Patients with COVID-19 exposure and symptoms were more likely to have a positive test than patients without symptoms. This supports contact tracing for symptomatic cases and testing as an important tool in detecting and containing community spread, according to the study's findings. Although most patients were referred because they lived with a family member with high risk for exposure or infection, this was not associated with positive test results.

"The impact of this virus is broad and affects planning for children, especially as schools and childcare centers work to reopen," Dr. Simpson says. "In order to guide the development of measures to control the ongoing pandemic, we need better understand the transmission potential of these mildly symptomatic or well children and young adults."
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Media contact:
Ariana Perez | ariana.perez@childrensnational.org | 301-244-6731

About Children's National Hospital

Children's National Hospital, based in Washington, D.C., celebrates 150 years of pediatric care, research and commitment to community. Volunteers opened the hospital in 1870 with 12 beds for children displaced after the Civil War. Today, 150 years stronger, it is among the nation's top 10 children's hospitals. It is ranked No. 1 for newborn care for the fourth straight year and ranked in all specialties evaluated by U.S. News & World Report. Children's National is transforming pediatric medicine for all children. In 2020, construction will be complete on the Children's National Research & Innovation Campus, the first in the nation dedicated to pediatric research. Children's National has been designated three times in a row as a Magnet® hospital, demonstrating the highest standards of nursing and patient care delivery. This pediatric academic health system offers expert care through a convenient, community-based primary care network and specialty outpatient centers in the D.C., metropolitan area, including the Maryland and Northern Virginia suburbs. Children's National is home to the Children's National Research Institute and Sheikh Zayed Institute for Pediatric Surgical Innovation and is the nation's seventh-highest NIH-funded children's hospital. It is recognized for its expertise and innovation in pediatric care and as a strong voice for children through advocacy at the local, regional and national levels.

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