In a new study, researchers found that from May to August 2020, there was a decrease in the age of COVID-19 cases in the United States.
The research was conducted by scientists from the CDC COVID-19 Response Team.
The team examined the changing age distribution of the COVID-19 pandemic from May to August.
They analyzed COVID-19-like illness-related emergency department visits, COVID-19 test results, and confirmed COVID-19 cases.
The researchers found that from May to July and August, the median age of COVID-19 cases declined from 46 to 37 and 38 years, respectively, nationwide.
In all U.S. Census regions, similar patterns were seen for COVID-19-like illness-related emergency department visits and positive RT-PCR test results.
From June to August, COVID-19 incidence was highest among adults aged 20 to 29 years, who accounted for > 20% of all confirmed cases.
In regional outbreaks of COVID-19 in the Southern United States in June, increases in the percentage of positive SARS-CoV-2 test results among adults aged 20 to 39 years preceded increases among adults aged ≥60 years by an average of 8.7 days.
The team says strict adherence to community mitigation strategies and personal preventive behaviors by younger adults is needed to help reduce their risk of infection and minimize COVID-19 transmission to people at higher risk for severe COVID-19.
One author of the study is Tegan K. Boehmer, Ph.D.
The study is published in the U.S. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report.
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