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Humoral immunity to SARS-CoV-2 and seasonal coronaviruses in children and adults in north-eastern France

Tom Woudenberg 1, 2 Stéphane Pelleau 1, 2 Francois Anna 3 Mikael Attia 4 Francoise Donnadieu 1, 2 Alain Gravet 5 Caroline Lohmann 5 Helene Seraphin 6 Raphael Guiheneuf 6 Catherine Delamare 7 Karl Stefic 8 Julien Marlet 8 Etienne Brochot 9, 10 Sandrine Castelain 9, 10 Olivier Augereau 11 Jean Sibilia 12 Francois Dubos 13 Damia Meddour 13 Christele Gras-Le Guen 14 Marianne Coste-Burel 14 Berthe-Marie Imbert-Marcille 14 Anne Chauvire-Drouard 15 Cyril Schweitzer 16 Amelie Gatin 17 Sandra Lomazzi 18 Aline Joulie 19 Herve Haas 19 Aymeric Cantais 20 Frederique Bertholon 20 Marie-France Chinazzo-Vigouroux 8 Mohamed S. Abdallah 21 Laurence Arowas 22 Pierre Charneau 3 Bruno Hoen 23 Caroline Demeret 4 Sylvie van Der Werf 4, 24 Arnaud Fontanet 25, 26, * Michael White 1, 2, * 
* Auteur correspondant
Abstract : Background: Children are underrepresented in the COVID-19 pandemic and often experience milder disease than adolescents and adults. Reduced severity is possibly due to recent and more frequent seasonal human coronaviruses (HCoV) infections. We assessed the seroprevalence of SARS-CoV-2 and seasonal HCoV specific antibodies in a large cohort in north-eastern France. Methods: In this cross-sectional seroprevalence study, serum samples were collected from children and adults requiring hospital admission for non-COVID-19 between February and August 2020. Antibody responses to SARS-CoV-2 and seasonal HCoV (229E, HKU1, NL63, OC43) were assessed using a bead-based multiplex assay, Luciferase-Linked ImmunoSorbent Assay, and a pseudotype neutralisation assay. Findings: In 2,408 individuals, seroprevalence of SARS-CoV-2-specific antibodies was 7-8% with three different immunoassays. Antibody levels to seasonal HCoV increased substantially up to the age of 10. Antibody responses in SARS-CoV-2 seropositive individuals were lowest in adults 18-30 years. In SARS-CoV-2 seronegative individuals, we observed cross-reactivity between antibodies to the four HCoV and SARS-CoV-2 Spike. In contrast to other antibodies to SARS-CoV-2, specific antibodies to sub-unit 2 of Spike (52) in seronegative samples were highest in children. Upon infection with SARS-CoV-2, antibody levels to Spike of betacoronavirus OC43 increased across the whole age spectrum. No SARS-CoV-2 seropositive individuals with low levels of antibodies to seasonal HCoV were observed. Interpretation: Our findings underline significant cross-reactivity between antibodies to SARS-CoV-2 and seasonal HCoV, but provide no significant evidence for cross-protective immunity to SARS-CoV-2 infection due to a recent seasonal HCoV infection. In particular, across all age groups we did not observe SARS-CoV-2 infected individuals with low levels of antibodies to seasonal HCoV.
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Soumis le : lundi 28 février 2022 - 17:29:23
Dernière modification le : mercredi 28 septembre 2022 - 05:55:41
Archivage à long terme le : : dimanche 29 mai 2022 - 19:44:20


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Tom Woudenberg, Stéphane Pelleau, Francois Anna, Mikael Attia, Francoise Donnadieu, et al.. Humoral immunity to SARS-CoV-2 and seasonal coronaviruses in children and adults in north-eastern France. EBioMedicine, Elsevier, 2021, 70, pp.103495. ⟨10.1016/j.ebiom.2021.103495⟩. ⟨hal-03591559⟩



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