Introduction: Coronavirus infection (COVID-19) was first registered in late 2019. The disease spread rapidly around the world in a few months and was declared a global pandemic in March 2020 by WHO. According to current statistics, children represent about 1–5% of diagnosed cases of COVID-19. Generally, COVID-19 is a less severe disease for children than it is for adults. Approximately 90% of pediatric patients are diagnosed with asymptomatic, mild or moderate disease. However, up to 6.7% of cases can be severe. Severe disease is usually observed in patients younger than 1 year of age and in patients with comorbidities.

Aim: The aim of our study is to analyze the incidence of COVID-19 among children in Sumy.

Materials and methods: The incidence of COVID-19 is studied among children aged 0 to 17 years old in Sumy according to statistics of 2020 and 8 months of 2021.

Results: According to the obtained data, the incidence of COVID-19 in 2020 was 115 children, including 28 children under 1 year. Whereas, in 2021 for 8 months this figure is 214 children, including 36 children under one year. The obtained data indicate a rapid increase in morbidity among children in Sumy.

Conclusion: The number of patients in 8 months of 2021 that need inpatient treatment nearly doubled compared to last year, which may indicate a mutation in the virus, affecting more children.