ABSTRACT
According to the available data, children are less susceptible for developing a severe course of COVID-19 and commonly have mild or asymptomatic course of infection. It is reported about an increased risk of having more severe course in infants, at the same time, according to the literature data, the course in children receiving antineoplastic and immunosuppressive therapy is milder in comparison with other concomitant pathologies. This article presents the unique clinical case and the literature review of combined COVID-19-pneumonia and extremely rare congenital myeloid leukemia in the infant with the description of long-term infection persistence, changes in clinical data in dynamics, bone marrow test results and the experience of using donor plasma with antibodies to SARS-CoV-2. © 2022, Graphica Ltd. All rights reserved.