Risk factors for severe COVID-19 infection in Brazilian children.

The aim of this study was to describe the epidemiological characteristics and clinical outcome of children hospitalized with COVID-19 and identify the risk factors for severe disease. All hospital admissions of pediatric patients between March and December 2020 in the southern region of Brazil were reviewed and the patients positive for RT-PCR for SARS-CoV-2 were identified. This region encompasses a population of over 2.8 million children and adolescents. Data were extracted from a national database that includes all cases of severe acute respiratory syndrome requiring hospitalization in Brazil. A total of 288 hospitalizations (51.3% female) with a median age of 3 years (interquartile range 0-12 years) were identified. Of these, 38.9% had chronic medical conditions, 55.6% required some form of supplementary oxygen, and 30.2% were admitted to an intensive care unit. There were 17 deaths (5.9%) related to COVID-19. Age less than 30 days was significantly associated with increased odds of critical illness (OR 9.52, 95% CI 3.01-30.08), as well as the presence of one chronic condition (OR 5.08 95%CI 2.78-9.33) or two or more chronic conditions (OR 6.60, 95% CI 3.17-13.74). Conclusion: Age under 30 days old and presence of chronic conditions were strongly associated with unfavorable outcomes in Brazilian children with SARS-CoV-2 infection. These findings could help local public health authorities to develop specific policies to protect this more vulnerable group of children.

Survival analysis of patients with systemic lupus erythematosus in a tertiary hospital in southern Brazil.

Systemic lupus erythematosus (SLE) treatments progress over the years. However, the mortality remains higher than in the general population. Few studies have examined SLE patients' survival in Brazil. This study aims to identify the main characteristics and risk factors to predict mortality and recognize the main causes of death in Brazilian patients with SLE. We retrospectively assessed clinical, demographic, and serological characteristics from 600 patients followed since 2001 in SLE outpatient clinic from Hospital de Clínicas de Porto Alegre. Risk factors for mortality were examined by univariate and multivariate Cox proportional hazards regression analyses. A p < 0.05 was considered significant. There were 527 survivors (87.83%). The main causes of death were cardiovascular disease (17%), infection (17%), and infection and SLE activity (17%). Risk factors for death were age at diagnosis (HR 1.065, CI 95% 1.039-10.092), SLICC damage index (HR 1.299, CI 95% 1.076-1569), antiphospholip syndrome (HR 3.021, CI 95% 1.307-6.985), and metilprednisolone pulse (HR 2.628, CI 95% 1.283-5.383). Antimalarials was a protective factor for death (HR 0.191, CI 95% 0.064-0.570). Cardiovascular disease, infection, and SLE activity associated with infection were the main known causes of deaths in our SLE patients. Secondary antiphospolipid syndrome, highest score in SLICC damage index, advanced age at diagnosis, and high dose of corticosteroids were risk factors for mortality. Antimalarials was an important protective factor.

Age of onset influences on clinical and laboratory profile of patients with systemic lupus erythematosus.

The present study aims to evaluate differences in clinical and laboratory manifestations and medication use in the different ages of disease onset in patients with systemic lupus erythematosus (SLE). This cross-sectional study consisted of 598 SLE patients (550 female and 48 male), who attended the Rheumatology Clinic of the Hospital de Clínicas de Porto Alegre between 2003 and 2015. Demographic, clinical and laboratory data were collected. The patients were classified into three groups according to their ages at disease diagnosis. Mean age of diagnosis was 33.6 ± 14.3 years, and the median (25th-75th percentile) disease duration was 13 (7-20) years. Among the patients studied, 419 (70%) were adult-onset (aSLE), 90 (14.8%) were late-onset (lSLE) and 89 (14.8%) were childhood-onset (cSLE). The female to male ratio was higher in aSLE (18:1) compared to the other groups (p = 0.001). Arthritis was predominantly found in aSLE (78.5%) when compared with lSLE (57.7%) (p < 0.001). Nephritis was more common in cSLE (60.6%) than in lSLE (26.6%) (p < 0.001). Median (25th-75th percentile) of SLE disease activity index (SLEDAI) was higher in the cSLE group [2 (0-5)] when compared to the lSLE group [0 (0-4)] (p = 0.045). Childhood-onset SLE showed a more severe disease due to the higher incidence of nephritis and needed a more aggressive treatment with immunosuppressive drugs.