ArticlePediatric nephrology (Berlin, Germany)2025
Seroprevalence of SARS-CoV-2 antibodies in children with nephrotic syndrome and chronic kidney disease: a cross-sectional study from India.
Article in Pediatric nephrology (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThere is a paucity of literature on the seroprevalence of SARS-CoV-2 antibodies among pediatric patients with underlying kidney disorders; few serosurveys among healthy children have shown seropositivity of 20-65% after different waves of infections.
methodsThe study had a cross-sectional design and was conducted between January 2023 and July 2023; 163 children and adolescents (1-18 years) with nephrotic syndrome and chronic kidney disease (CKD) were screened for Anti-Spike SARS-COV-2 IgG antibodies as detected by a quantitative chemiluminescence immunoassay. Children with nephrotic syndrome, both steroid sensitive (SSNS) and steroid resistant (SRNS) were enrolled during disease remission. Correlation of SARS-CoV-2 seropositivity status was done with age, gender, disease type, treatment duration, immunosuppressants, previous SARS-CoV-2 infection, and immunization status.
resultsOf 163 children (63.8% boys) with median age of 9 years; 101 (62%) had underlying nephrotic syndrome (61 SSNS and 40 SRNS), and 62 (38%) children had CKD. Seroprotective titers for SARS-COV2 antibodies were present in 100 (61.3%) children. The median titers for all patients were 37.1 BAU/mL; for nephrotic syndrome they were 27.1 BAU/mL and for CKD they were 76.7 BAU/mL (p = 0.0033). A total of 43 (26.4%) children had high positive antibody levels (> 200 BAU/ml). Among those with nephrotic syndrome 60.7% with SSNS and 43.5% SRNS had seropositive titers. Only 4 (2.5%) children had a history of previous COVID infection and 6 (3.7%) were vaccinated.
conclusionsIn a largely unvaccinated population of children with nephrotic syndrome and CKD, 61.3% were seropositive for SARS-CoV-2 IgG antibody indicating a past asymptomatic infection; titers were significantly higher in CKD compared to nephrotic syndrome.
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