INTRODUCTION
The outbreak of the new coronavirus disease (COVID-19) continues to be a major global health problem that emerged in Wuhan Province, China in late December, turned into a pandemic within a few months and caused many deaths despite many worldwide measures (1,2) Although COVID-19 infection usually presents with symptoms such as fever, cough, respiratory distress, myalgia, and diarrhea in children and adults, it mostly progresses less in children compared to adults, and radiological and laboratory findings may be different in children and adults (3,4). Early diagnosis of COVID-19 infection in children is significant not only for the health of children, but also for preventing the risk of transmission to adults. Although many diagnostic tests are being used for the diagnosis of COVID-19 infection throughout the world, RT-PCR test is accepted as the most reliable laboratory diagnosis method, but the average accuracy of the PCR test is around 40-60% depending on many factors (5). Therefore, clinical findings, radiological findings and laboratory tests have an important place in the diagnosis and follow-up of COVID-19, especially in pediatric patients (6,7). In this study, clinical findings, radiological findings, laboratory findings and polymerase chain reaction (PCR) test results were evaluated according to age groups in pediatric patients who were followed up with the diagnosis of COVID-19 with PCR (+) or PCR (-).