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Moncunill G, Mayor A, Santano R, Jiménez A, Vidal M, Tortajada M, Sanz S, Méndez S, Llupià A, Aguilar R, Alonso S, Barrios D, Carolis C, Cisteró P, Chóliz E, Cruz A, Fochs S, Jairoce C, Hecht J, Lamoglia M, Martínez MJ, Moreno J, Mitchell RA, Ortega N, Pey N, Puyol L, Ribes M, Rosell N, Figueroa-Romero A, Sotomayor P, Torres S, Williams S, Barroso S, Vilella A, Trilla A, Varela P, Dobaño C, Garcia-Basteiro AL. SARS-CoV-2 Seroprevalence and Antibody Kinetics Among Health Care Workers in a Spanish Hospital After 3 Months of Follow-up. J Infect Dis 2021; 223:62-71. [PMID: 33175145 PMCID: PMC7717341 DOI: 10.1093/infdis/jiaa696] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/29/2020] [Indexed: 01/01/2023] Open
Abstract
Background At the COVID-19 spring 2020 pandemic peak in Spain, prevalence of SARS-CoV-2 infection in a cohort of 578 randomly selected health care workers (HCWs) from Hospital Clínic de Barcelona was 11.2%. Methods A follow-up survey 1 month later (April-May 2020) measured infection by rRT-PCR and IgM, IgA, and IgG to the receptor-binding domain of the spike protein by Luminex. Antibody kinetics, including IgG subclasses, was assessed until month 3. Results At month 1, the prevalence of infection measured by rRT-PCR and serology was 14.9% (84/565) and seroprevalence 14.5% (82/565). We found 25 (5%) new infections in 501 participants without previous evidence of infection. IgM, IgG, and IgA levels declined in 3 months (antibody decay rates 0.15 [95% CI, .11–.19], 0.66 [95% CI, .54–.82], and 0.12 [95% CI, .09–.16], respectively), and 68.33% of HCWs had seroreverted for IgM, 3.08% for IgG, and 24.29% for IgA. The most frequent subclass responses were IgG1 (highest levels) and IgG2, followed by IgG3, and only IgA1 but no IgA2 was detected. Conclusions Continuous and improved surveillance of SARS-CoV-2 infections in HCWs remains critical, particularly in high-risk groups. The observed fast decay of IgA and IgM levels has implications for seroprevalence studies using these isotypes.
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Affiliation(s)
- Gemma Moncunill
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Alfredo Mayor
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain.,Centro de Investigação em Saúde de Manhiça, Maputo, Mozambique
| | - Rebeca Santano
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Alfons Jiménez
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain
| | - Marta Vidal
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Marta Tortajada
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Sergi Sanz
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain.,Department of Basic Clinical Practice, Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Susana Méndez
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain
| | - Anna Llupià
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Department of Preventive Medicine and Epidemiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Ruth Aguilar
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Selena Alonso
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Diana Barrios
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Carlo Carolis
- Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Pau Cisteró
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Eugenia Chóliz
- Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Angeline Cruz
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Silvia Fochs
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Chenjerai Jairoce
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centro de Investigação em Saúde de Manhiça, Maputo, Mozambique
| | - Jochen Hecht
- Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Montserrat Lamoglia
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Faculty of Health Sciences of Blanquerna, Universitat Ramon Llull de Barcelona, Barcelona, Spain
| | - Mikel J Martínez
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Department of Microbiology, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Javier Moreno
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Robert A Mitchell
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Natalia Ortega
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Nuria Pey
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Laura Puyol
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Marta Ribes
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Neus Rosell
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | | | - Patricia Sotomayor
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Sara Torres
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Sarah Williams
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Sonia Barroso
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Anna Vilella
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Department of Preventive Medicine and Epidemiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Antoni Trilla
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain.,Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Pilar Varela
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Carlota Dobaño
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain
| | - Alberto L Garcia-Basteiro
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain.,Spanish Consortium for Research in Epidemiology and Public Health, Madrid, Spain.,International Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
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Garcia-Basteiro AL, Moncunill G, Tortajada M, Vidal M, Guinovart C, Jiménez A, Santano R, Sanz S, Méndez S, Llupià A, Aguilar R, Alonso S, Barrios D, Carolis C, Cisteró P, Chóliz E, Cruz A, Fochs S, Jairoce C, Hecht J, Lamoglia M, Martínez MJ, Mitchell RA, Ortega N, Pey N, Puyol L, Ribes M, Rosell N, Sotomayor P, Torres S, Williams S, Barroso S, Vilella A, Muñoz J, Trilla A, Varela P, Mayor A, Dobaño C. Seroprevalence of antibodies against SARS-CoV-2 among health care workers in a large Spanish reference hospital. Nat Commun 2020; 11:3500. [PMID: 32641730 PMCID: PMC7343863 DOI: 10.1038/s41467-020-17318-x] [Citation(s) in RCA: 264] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 06/19/2020] [Indexed: 01/19/2023] Open
Abstract
Health care workers (HCW) are a high-risk population to acquire SARS-CoV-2 infection from patients or other fellow HCW. This study aims at estimating the seroprevalence against SARS-CoV-2 in a random sample of HCW from a large hospital in Spain. Of the 578 participants recruited from 28 March to 9 April 2020, 54 (9.3%, 95% CI: 7.1-12.0) were seropositive for IgM and/or IgG and/or IgA against SARS-CoV-2. The cumulative prevalence of SARS-CoV-2 infection (presence of antibodies or past or current positive rRT-PCR) was 11.2% (65/578, 95% CI: 8.8-14.1). Among those with evidence of past or current infection, 40.0% (26/65) had not been previously diagnosed with COVID-19. Here we report a relatively low seroprevalence of antibodies among HCW at the peak of the COVID-19 epidemic in Spain. A large proportion of HCW with past or present infection had not been previously diagnosed with COVID-19, which calls for active periodic rRT-PCR testing in hospital settings.
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Affiliation(s)
- Alberto L Garcia-Basteiro
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
- International Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique.
| | - Gemma Moncunill
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Marta Tortajada
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Marta Vidal
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | | | - Alfons Jiménez
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Spanish Consortium for Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Rebeca Santano
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Sergi Sanz
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Spanish Consortium for Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Department of Basic Clinical Practice, Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Susana Méndez
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Spanish Consortium for Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Anna Llupià
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Department of Preventive Medicine and Epidemiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Ruth Aguilar
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Selena Alonso
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Diana Barrios
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Carlo Carolis
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Pau Cisteró
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Eugenia Chóliz
- Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Angeline Cruz
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Silvia Fochs
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Chenjerai Jairoce
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
| | - Jochen Hecht
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Montserrat Lamoglia
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Faculty of Health Sciences of Blanquerna, Universitat Ramon Llull de Barcelona, Barcelona, Spain
| | - Mikel J Martínez
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Department of Microbiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Robert A Mitchell
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Natalia Ortega
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Nuria Pey
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Laura Puyol
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Marta Ribes
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Neus Rosell
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | | | - Sara Torres
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Sarah Williams
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Sonia Barroso
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Anna Vilella
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Department of Preventive Medicine and Epidemiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - José Muñoz
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- International Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Antoni Trilla
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Department of Preventive Medicine and Epidemiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
- Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Pilar Varela
- Occupational Health Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Alfredo Mayor
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique
- Spanish Consortium for Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Carlota Dobaño
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- Spanish Consortium for Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
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