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Large variation in anti-SARS-CoV-2 antibody prevalence among essential workers in Geneva, Switzerland

2021; Nature Portfolio; Volume: 12; Issue: 1 Linguagem: Inglês

10.1038/s41467-021-23796-4

2041-1723

Silvia Stringhini, María-Eugenia Zaballa, Nick Pullen, Carlos de Mestral, Javier Perez‐Saez, Roxane Dumont, Attilio Picazio, Francesco Pennacchio, Yaron Dibner, Sabine Yerly, Hélène Baysson, Nicolas Vuilleumier, Jean-François Balavoine, Delphine Bachmann, Didier Trono, Didier Pittet, François Chappuis, Omar Kherad, Laurent Kaiser, Andrew S. Azman, Victoria Alber, Isabelle Arm‐Vernez, Delphine Bachmann, Donatien Bachmann, Stéphanie Baggio, Gil Barbosa Monteiro, Hélène Baysson, Patrick Bleich, Isabelle Boissel, Prune Collombet, Delphine S. Courvoisier, Philippine Couson, Alioucha Davidovic, Clement Deiri, Divina Del Rio, Carlos de Mestral, David De Ridder, Paola D’Ippolito, Joséphine Duc, Isabella Eckerle, Nacira El Merjani, Gwennaelle Ferniot, A Flahault, Natalie Francioli, Marion Frangville, Carine Garande, Laurent Gétaz, P. Giraldo, Fanny Golaz, Julie Guérin, Ludivine Haboury, Séverine Harnal, Victoria Javet, Laurent Kaiser, Amélie Laboulais, Gaëlle Lamour, Xavier Lefebvre, Pierre Lescuyer, Andrea Loizeau, Fanny-Blanche Lombard, Elsa Lorthe, Chantal Martinez, Kourosh Massiha, Ludovic Metral-Boffod, Benjamin Meyer, Khaled Mostaguir, Mayssam Nehme, Natacha Noël, Nicolas Oederlin, Dušan Petrović, Giovanni Piumatti, Jane Portier, Géraldine Poulain, Caroline Pugin, Barinjaka Rakotomiaramanana, Zo Francia Randrianandrasana, Aude Richard, Viviane Richard, Sabina Rodriguez-Velazquez, Lilas Salzmann-Bellard, Leonard Thorens, Simon Torroni, David Vidonne, Guillemette Violot, Zoé Waldmann, Manon Will, Ania Wisniak, Idris Guessous,

COVID-19 epidemiological studies

Abstract Limited data exist on SARS-CoV-2 infection rates across sectors and occupations, hindering our ability to make rational policy, including vaccination prioritization, to protect workers and limit SARS-CoV-2 spread. Here, we present results from our SEROCoV-WORK + study, a serosurvey of workers recruited after the first wave of the COVID-19 pandemic in Geneva, Switzerland. We tested workers (May 18—September 18, 2020) from 16 sectors and 32 occupations for anti-SARS-CoV-2 IgG antibodies. Of 10,513 participants, 1026 (9.8%) tested positive. The seropositivity rate ranged from 4.2% in the media sector to 14.3% in the nursing home sector. We found considerable within-sector variability: nursing home (0%–31.4%), homecare (3.9%–12.6%), healthcare (0%–23.5%), public administration (2.6%–24.6%), and public security (0%–16.7%). Seropositivity rates also varied across occupations, from 15.0% among kitchen staff and 14.4% among nurses, to 5.4% among domestic care workers and 2.8% among journalists. Our findings show that seropositivity rates varied widely across sectors, between facilities within sectors, and across occupations, reflecting a higher exposure in certain sectors and occupations.