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In this study, we aimed to characterize a cohort of children hospitalized due to varicella before and after the outbreak of the COVID-19 pandemic. Medical charts of all children hospitalized in the Regional Hospital of Infectious Diseases in Warsaw due to varicella in the years 2019 and 2022 were retrospectively analyzed and compared. In total, 221 children were included in the analysis; 59 of them were hospitalized in 2019, whereas 162 were hospitalized in 2022. Children hospitalized in 2022 were older than those reported in 2019 (median 4.0 vs. 3.0 years, p = 0.02). None of the hospitalized children received complete varicella vaccination. The most common complication in both years was bacterial superinfection of skin lesions, found in 156/221 (70.6%) of patients. This complication rate was higher in 2022 (50.8% in 2019 vs. 77.8% in 2022, p = 0.0001), OR = 3.38, 95% CI: 1.80–6.35. Moreover, skin infections in 2022 more often manifested with cellulitis (in 2022 13.6% vs. 3.4% in 2019, p = 0.03), OR = 4.40, 95% CI: 1.00–19.33. Sepsis as a complication of varicella was almost five-fold more prevalent in 2022 than in 2019 (p = 0.009), OR = 5.70, 95% CI: 1.31–24.77. Antibiotic use increased between 2019 and 2022 (71.2% vs. 85.2%, p = 0.01). Furthermore, patients were treated more frequently with the combination of two different antibiotics simultaneously (only 3.4% of patients in 2019 compared to 15.4% in 2022, p = 0.01). Primary infections with varicella zoster virus in 2022 led to a more severe course of the disease.

Since late 2021, we have observed a significant increase in the proportion of children infected with SARS-CoV-2. The course of the disease in children is usually sparsely symptomatic or asymptomatic. However, the predominance of new virus variants makes children more likely to become symptomatically ill and require hospitalisation. This paper aims to update recommendations for managing a child with COVID-19 in out- and inpatient settings. Current options for prevention and antiviral treatment are discussed, noting the limited availability of therapy for children. In most children with COVID-19, the basis for treatment remains symptomatic and supportive therapy and measures to reduce SARS-CoV-2 infection spread.

This report presents first case of severe multi-organ trauma, complicated with SARS-CoV-2 infection. The child suffered from trauma resulting from falling out of the window. Imaging revealed head trauma, areas of lung contusion and abdominal organ trauma. Co-existence of multi-organ trauma, affecting chest and lungs, obscured the characteristic for COVID-19 pneumonia appe arance.