biostudies-literatureHong MZR &amp; D project on the Prevention and Control of COVID-19 from Science and Technology Bureau of FujianR & D project on the Prevention and Control of COVID-19 from Science and Technology Bureau of FujianNatural Science Foundation of Fujian ProvinceEmergency Response to COVID-19 of National Administration of Traditional Chinese MedicineNational Natural Science Foundation of China728https://www.ebi.ac.uk/biostudies/studies/S-EPMC9454403biostudies-literatureUnknown22(1)<h4>Background</h4>This study compared clinical features of the Delta variant of coronavirus disease 2019 (COVID-19) in children and adults.<h4>Methods</h4>Clinical data included 80 children and 132 adults with the Delta variant of COVID-19, hospitalized in the Affiliated Hospital of Putian College between September and October 2021. The data was analyzed retrospectively.<h4>Results</h4>The proportion of mild patients in the children group (50%) was higher than that in the adults group (17.9%). Cough (25%, 20/80) and diarrhea (1.3%, 1/80) symptoms in children group were significantly less frequent. Compared with adults, there was no significant difference in the viral load of SARS-CoV-2 in samples collected by nasopharyngeal swabs. In children, lymphocyte count was higher [1.98 (0.25-4.25)BMC infectious diseasesDifferent clinical features of children and adults in regional outbreak of Delta COVID-19.PMC94544032020J0112182021Y01012021ZYLCYJ07-281871645Pan JSHong MZDong XChen WXing QQQiu RLin HLi QfalseDifferent clinical features of children and adults in regional outbreak of Delta COVID-19.<h4>Background</h4>This study compared clinical features of the Delta variant of coronavirus disease 2019 (COVID-19) in children and adults.<h4>Methods</h4>Clinical data included 80 children and 132 adults with the Delta variant of COVID-19, hospitalized in the Affiliated Hospital of Putian College between September and October 2021. The data was analyzed retrospectively.<h4>Results</h4>The proportion of mild patients in the children group (50%) was higher than that in the adults group (17.9%). Cough (25%, 20/80) and diarrhea (1.3%, 1/80) symptoms in children group were significantly less frequent. Compared with adults, there was no significant difference in the viral load of SARS-CoV-2 in samples collected by nasopharyngeal swabs. In children, lymphocyte count was higher [1.98 (0.25-4.25)2022-01-01T00:00:00Z2022 Sep2025-04-18T11:41:50.977Z2024-10-15T01:20:13.164ZS-EPMC94544033607616710.1186/s12879-022-07707-6