Characteristics of the delayed respiratory syncytial virus epidemic, 2020/2021, Rhône Loire, France

Jean-Sebastien Casalegno, Dominique Ploin, Aymeric Cantais, Elsa Masson, Emilie Bard, Martine Valette, Remi Fanget, Sandrine Couray Targe, Anne-Florence Myar-Dury, Muriel Doret-Dion, Mona Massoud, Gregory Queromes, Philippe Vanhems, Olivier Claris, Marine Butin, Sylvie Pillet, Florence Ader, Sylvie Bin, Alexandre Gaymard, Bruno Lina, Florence Morfin, VRS study group in Lyon, Etienne Javouhey, Yves Gillet, Antoine Ouziel, Jean-Claude Tardy, Pascal Gaucherand, Luc Panetta, Jerome Massardier, Stephanie Polazzi, Antoine Duclos, Mehdi Benchaib, Regine Cartier, Marine Jourdain, Michelle Ottmann, Rolf Kramer, Sylvie Fiorini, Nathalie Rivat, Yahia Mekki, Julie Fort-Jacquier, Maud-Catherine Barral, Vey Noelie, Julie Haesebaert, Come Horvat, Leo Vidoni, Jean-Marc Reynes, Jean-Francois Eleouet, Laurence Josset, Matthieu Receveur, Jean-Sebastien Casalegno, Dominique Ploin, Aymeric Cantais, Elsa Masson, Emilie Bard, Martine Valette, Remi Fanget, Sandrine Couray Targe, Anne-Florence Myar-Dury, Muriel Doret-Dion, Mona Massoud, Gregory Queromes, Philippe Vanhems, Olivier Claris, Marine Butin, Sylvie Pillet, Florence Ader, Sylvie Bin, Alexandre Gaymard, Bruno Lina, Florence Morfin, VRS study group in Lyon, Etienne Javouhey, Yves Gillet, Antoine Ouziel, Jean-Claude Tardy, Pascal Gaucherand, Luc Panetta, Jerome Massardier, Stephanie Polazzi, Antoine Duclos, Mehdi Benchaib, Regine Cartier, Marine Jourdain, Michelle Ottmann, Rolf Kramer, Sylvie Fiorini, Nathalie Rivat, Yahia Mekki, Julie Fort-Jacquier, Maud-Catherine Barral, Vey Noelie, Julie Haesebaert, Come Horvat, Leo Vidoni, Jean-Marc Reynes, Jean-Francois Eleouet, Laurence Josset, Matthieu Receveur

Abstract

The Rhône-Loire metropolitan areas' 2020/21 respiratory syncytial virus (RSV) epidemic was delayed following the implementation of non-pharmaceutical interventions (NPI), compared with previous seasons. Very severe lower respiratory tract infection incidence among infants ≤ 3 months decreased twofold, the proportion of cases among children aged > 3 months to 5 years increased, and cases among adults > 65 years were markedly reduced. NPI appeared to reduce the RSV burden among at-risk groups, and should be promoted to minimise impact of future RSV outbreaks.

Trial registration: ClinicalTrials.gov NCT04944160.

Keywords: COVID-19; RSV; SARI; SARS-CoV-2; bronchiolitis; disease burden; non-pharmacological interventions; pharmacological interventions.

Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure 1
Figure 1
Number of laboratory-confirmed respiratory syncytial virus cases by week, university hospitals of Lyon and Saint-Etienne, France, epidemiological seasons 2018/19−2020/21
Figure 2
Figure 2
Age pyramid of respiratory syncytial virus cases by epidemiological season, university hospitals of Lyon and Saint-Etienne, France, epidemiological seasons 2018/19−2020/21a

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Source: PubMed

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