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A new coronavirus infection caused by the SARS-CoV-2 virus is characterized by a systemic hyperinflammatory response with a pronounced increase in the content of pro-inflammatory cytokines. Materials and methods. The study was conducted on the basis of the Samara Regional Children's Infectious Diseases Hospital from 2021 to 2022. 40 patients with moderate (n = 20, group I) and severe forms (n = 20, group II) COVID-19 were studied, the comparison group consisted of patients with viral pneumonia of another etiology (n = 35, group III). Results. The infectious agent SARS-CoV-2 induces high levels of cytokines IL-6 (p < 0.005), IL-8 (p < 0.05) and a slight increase in TNF-α (p < 0.05). IL-8 was significantly associated with disease duration (p < 0.01). We assume that the value of this interleukin will increase in the post-COVID period. Conclusions. Changes in IL-6 and IL-8 levels in patients with COVID-19, along with clinical features, are important biomarkers for predicting the severity and duration of the disease.

Introduction. Currently, the coronavirus infection pandemic caused by the SARS-CoV-2 virus continues around the world. Research data from domestic and foreign authors indicate that the kidneys are a target organ for a new infection, lesions vary from proteinuria and hematuria to acute kidney injury.Aim of the study – to determine the frequency and nature of kidney damage in children with confirmed coronavirus infection.Materials and methods. A retrospective and prospective analysis of cases of confirmed COVID-19 infection in children (n = 441) admitted to the Samara Regional Children’s Infectious Diseases Hospital from March 2020 to July 2021 was carried out. SARSCoV-2 RNA was detected in all patients by a one-step reverse transcription reaction combined with a polymerase chain reaction. The changes in the kidneys that occurred in 57 children were studied. The research results were processed using the Statistica 7.0 software (StatSoft, USA).Results. The involvement of the kidneys in the infectious process was detected in every 8 children with COVID-19 (12.9%), more often in the form of isolated urinary syndrome, the detection rate of which correlated with the severity of the course of coronavirus infection: in severe cases, proteinuria was detected in 31.6% of patients, hematuria – in 21%, acute kidney injury – in 10.5%, diabetic nephropathy – in 5.3%. Kidney damage was combined with damage to the respiratory and gastrointestinal tract, characterized by rapid recovery of urine output and azotemia parameters without special renal therapy. A clinical case of the onset of nephrotic syndrome that developed 2 weeks after suffering a coronavirus infection is described.Conclusions. Children with COVID-19 require kidney function monitoring for early detection and correction in case of impairment. Patients with isolated urinary syndrome in the acute period require long-term observation in order to detect latent renal pathology.

Introduction. Tonsillopharyngitis often accompanies the course of acute respiratory infections in children (up to 12-15%). The use of systemic antibacterial drugs for viral etiology of the disease has not been shown, therefore, the interest of researchers in the use of herbal products is increasing. In numerous clinical trials conducted around the world, the liquid extract of the roots of Pelargonium sidoides EPs® 7630 has been shown to be effective and safe in the treatment of acute respiratory infections, acute tonsillopharyngitis, rhinosinusitis, acute bronchitis in adults and children.Objective of the study: assessment of the efficacy and safety of the drug EPs® 7630 (Umckalor) in acute tonsillopharyngitis of non-streptococcal etiology in children 2-6 years old on an outpatient basis.Materials and methods. A prospective analysis of cases of treatment with Umckalor for acute tonsillopharyngitis of non-streptococcal etiology against the background of acute respiratory infection in children 2-6 years old (n = 23, group 1) was carried out.The comparison group (2) consisted of children receiving standard therapy (n = 22). Systemic antibiotics and antiviral drugs were not used in all patients. The study was conducted over 6 months (2019-2020). The research results were processed using the Statistica 7.0 software (StatSoft, USA).Results and discussion. Therapy with Umckalor in children with acute tonsillopharyngitis contributed to the elimination of the main clinical symptoms of the disease on the 4th day of treatment (efficiency was 69.9%, p < 0.05). The most persistent symptom was hyperemia of the tonsils and oropharynx. The period of convalescence occurred 2 days earlier than in the children of group 2 (p < 0.05). Umckalor was well tolerated, no side effects of the drug were identified.Conclusions. The drug Umckalor can be recommended for monotherapy for 7 days in patients with acute non-streptococcal tonsillopharyngitis on an outpatient basis with mild and moderate disease.