1. First cases of Omicron in France are exhibiting mild symptoms, November 2021-January 2022
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A. Maisa, G. Spaccaferri, L. Fournier, J. Schaeffer, J. Deniau, P. Rolland, B. Coignard, A. Andrieu, O. Broustal, S. Chene, S. Chent, E. Fougère, G. Gbaguidi, M. Hamidouche, A. Lamy, Q. Mano, B. Mastrovito, A. Mercier, G. Modenesi, G. Picard, J. Prudhomme, F. Rapilly, A. Riondel, M. Rivière, B. Villegas Ramirez, A. Zhu-Soubise, M. Zurbaran, A. Amzert, L. Andreoletti, A. Bal, R. Beaurepere, S. Behillil, L. Belec, C. Bernard, L. Bocket, L. Bouri, T. Bourlet, C. Bressollette-Bodin, S. Brichler, C. Brugerolles, S. Cado, V. Calvez, N. Capron, S. Castelain, J. Castro-Alvarez, M.-L. Chaix, C. Charpentier, D. Che, C. Chillou, P. Colson, P. Coudene, A. Crinquette, A. De Rougemont, H. Delagrèverie, C. Delamare, T. Denecker-Berardino, D. Descamps, M. Desroches, G. Destras, G. Dos Santos, A. Ducancelle, S. Ducreux, T. Duret, V. Enouf, S. Fafi-Kremer, C. Felici, S. Fourati, P.-E. Fournier, C. Gaudy, H. Germain, V. Giordanengo, O. Gorge, S. Haim-Boukobza, C. Henquell, A. Holstein, L. Houhamdi, J. Izopet, V. Jacomo, A. Jacques, M.-C. Jaffar-Bandjee, M. Jimenez, L. Josset, S. Kemeny, M.-E. Lafon, A. Le Bars, G. Le Corguille, Q. Lepiller, A. Levasseur, N. Leveque, B. Lina, C. Madelaine, C. Malabat, S. Marque-Juillet, T. Martin-Dunavit, P. Mavingui, A. Merens, I. Messak, L. Morand-Joubert, X. Naudot, P. Neybecker, J.-M. Pawlotsky, L. Pilorge, J.-C. Plantier, C. Poggi, M. Pretet, C. Ragot, H. Raoul, S. Rogez, A.-M. Roque-Afonso, B. Roquebert, D. Rousset, F. Rozenberg, C. Sagot, S. Sahnoune, D. Salgado, O. Sand, C. Saudemont, E. Schvoerer, E. Simon-Loriere, R. Stephan, J. Sudour, V. Thibault, E. Tuaillon, A. Vabret, E. Vallee, S. Van Der Werf, J. Van Helden, L. Verdurme, A. Vignola, D. Wilkinson, Y. Yazdanpanah, Santé publique France - French National Public Health Agency [Saint-Maurice, France], EMERGEN consortium, Institut Pierre Louis d'Epidémiologie et de Santé Publique (iPLESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), NASA Ames Research Center (ARC), Service d'Hépato-Gastro-Entérologie et Nutrition [CHU Limoges], CHU Limoges, Département lmage et Traitement Information (IMT Atlantique - ITI), IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Equipe DECIDE (Lab-STICC_DECIDE), Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT), Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Microbes évolution phylogénie et infections (MEPHI), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Vecteurs - Infections tropicales et méditerranéennes (VITROME), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Institut Hospitalier Universitaire Méditerranée Infection (IHU Marseille), Institut Pasteur de la Guyane, Réseau International des Instituts Pasteur (RIIP), Génétique Moléculaire des Virus à ARN - Molecular Genetics of RNA Viruses (GMV-ARN (UMR_3569 / U-Pasteur_2)), Institut Pasteur [Paris] (IP)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Santé publique France, the French national public health agency.Caisse nationale d’assurance maladie (Cnam), the national health insurance funds.'Enhancing Whole Genome Sequencing (WGS) and/or Reverse Transcription Polymerase Chain Reaction (RT-PCR) national infrastructures and capacities to respond to the COVID-19 pandemic in the European Union and European Economic Area' Grant Agreement ECDC/HERA/2021/007 ECD. 12221., Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées (IRBA), and COMBE, Isabelle
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Adult ,Epidemiology ,MESH: Hospitalization ,[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,MESH: COVID-19 ,Humans ,MESH: SARS-CoV-2 ,[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology ,Signs and symptoms ,[SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology ,[SDV.MHEP.ME] Life Sciences [q-bio]/Human health and pathology/Emerging diseases ,[SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases ,MESH: Humans ,SARS-CoV-2 ,Vaccination ,COVID-19 ,MESH: Adult ,MESH: Vaccination ,[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology ,[SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system ,MESH: France ,Hospitalization ,Infectious Diseases ,[SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology ,[SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,France ,[SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology ,Surveys and questionnaires ,[SDV.MP.PAR] Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology - Abstract
International audience; ObjectivesWe aimed to investigate the first Omicron cases detected in France in order to assess case characteristics and provide supporting information on the possible impact of this variant on the healthcare system.MethodsA standardized questionnaire was used to collect information from confirmed and probable Omicron cases.ResultsMedian age of 468 investigated cases was 35 years, 376 were symptomatic (89%); 64% were vaccinated with two doses and 7% had received three doses. Loss of smell and taste were reported by 8.3% and 9% of cases, respectively. Seven cases were hospitalized, three of those were unvaccinated (including two with reported precondition). No admissions to intensive care and no deaths were reported.ConclusionsOur results confirm a mild clinical presentation among the first Omicron cases detected in France and highlight the importance for the national COVID-19 surveillance system to quickly detect and adapt to the emergence of a new variant.
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- 2022