Infection induced SARS-CoV-2 seroprevalence and heterogeneity of antibody responses in a general population cohort study in Catalonia Spain

Sparse data exist on the complex natural immunity to SARS-CoV-2 at the population level. We applied a well-validated multiplex serology test in 5000 participants of a general population study in Catalonia in blood samples collected from end June to mid November 2020. Based on responses to fifteen is...

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Vydáno v:	Scientific reports Ročník 11; číslo 1; s. 21571 - 12
Hlavní autoři:	Karachaliou, Marianna, Moncunill, Gemma, Espinosa, Ana, Castaño-Vinyals, Gemma, Jiménez, Alfons, Vidal, Marta, Santano, Rebeca, Barrios, Diana, Puyol, Laura, Carreras, Anna, Mayer, Leonie, Rubio, Rocío, Cortés, Beatriz, Pleguezuelos, Vanessa, O’Callaghan-Gordo, Cristina, Fossati, Serena, Rivas, Ioar, Casabonne, Delphine, Vrijheid, Martine, Izquierdo, Luis, Aguilar, Ruth, Basagaña, Xavier, Garcia-Aymerich, Judith, de Cid, Rafael, Dobaño, Carlota, Kogevinas, Manolis
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	London Nature Publishing Group UK 03.11.2021 Nature Publishing Group Nature Portfolio
Témata:	631/250/255/2514 692/308/174 692/499 Adolescent Adult Antibodies Antibody Formation Body weight Cohort analysis Cohort Studies COVID-19 Heterogeneity Humanities and Social Sciences Humans Immunoglobulin A Immunoglobulin G Immunoglobulin G - blood Infections multidisciplinary Nucleocapsids Overweight Population Population studies Population-based studies SARS-CoV-2 Science Science (multidisciplinary) Seroepidemiologic Studies Serology Severe acute respiratory syndrome coronavirus 2 Spain Spain Catalonia Spain
ISSN:	2045-2322, 2045-2322
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Shrnutí:	Sparse data exist on the complex natural immunity to SARS-CoV-2 at the population level. We applied a well-validated multiplex serology test in 5000 participants of a general population study in Catalonia in blood samples collected from end June to mid November 2020. Based on responses to fifteen isotype-antigen combinations, we detected a seroprevalence of 18.1% in adults (n = 4740), and modeled extrapolation to the general population of Catalonia indicated a 15.3% seroprevalence. Antibodies persisted up to 9 months after infection. Immune profiling of infected individuals revealed that with increasing severity of infection (asymptomatic, 1–3 symptoms, ≥ 4 symptoms, admitted to hospital/ICU), seroresponses were more robust and rich with a shift towards IgG over IgA and anti-spike over anti-nucleocapsid responses. Among seropositive participants, lower antibody levels were observed for those ≥ 60 years vs < 60 years old and smokers vs non-smokers. Overweight/obese participants vs normal weight had higher antibody levels. Adolescents (13–15 years old) (n = 260) showed a seroprevalence of 11.5%, were less likely to be tested seropositive compared to their parents and had dominant anti-spike rather than anti-nucleocapsid IgG responses. Our study provides an unbiased estimate of SARS-CoV-2 seroprevalence in Catalonia and new evidence on the durability and heterogeneity of post-infection immunity.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	2045-2322 2045-2322
DOI:	10.1038/s41598-021-00807-4