Should we test asymptomatic children for SARS-CoV-2?

Design Cross-sectional study.Sample selection This study included 921 children (471 male, 450 female) due to receive either routine dental care involving aerosol generating procedures or comprehensive dental care under general anaesthetic. Data was collected at a paediatric dental clinic associated with the University of Illinois, Chicago. Patients were screened by a telephone questionnaire assessing for coronavirus disease 2019 (COVID-19) or severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Asymptomatic patients and those with no known disease exposure went on to receive a reverse transcription polymerase chain reaction (RT-PCR) test for SARS-CoV-2, the causative pathogen for COVID-19. Those displaying symptoms of COVID-19 or who had potentially been exposed to the virus or disease were not included in this study and were referred for onwards medical advice.Data analysis Electronic dental records were accessed to retrieve patient demographics, insurance type, dental diagnosis and past medical history. The percentage of positive SARS-CoV-2 test results was calculated for each category. Positive and negative test results were compared appropriately for both categorical and continuous variables, with significance reached when p <0.05. SPSS version 27 was used for statistical analysis.Results This study found the positivity rate for SARS-CoV-2 to be 2.3% (21/921) in asymptomatic dental patients aged under 18 years. Age, insurance type, medical history and dental diagnosis were comparable in both positive and negative test result groups. The Hispanic/Latinx population had a higher percentage (3.1%) of positive tests than other groups. More male patients tested positive for SARS-CoV-2 (13 male, 8 female), but this was not statistically significant.Conclusions RT-PCR testing identified children carrying SARS-CoV-2 who had been cleared to attend an appointment following a screening questionnaire.