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National Surveillance of Enterovirus D68 Upsurge, France, 2024
Marion Jeannoël, Maxime Bisseux, Stéphanie Dan, Elisa Creuzet, Delphine Parraud, Jean-Luc Bailly, Jérémie Lebeurre, Amélie Brebion, Hélène Chabrolles, Laurence Josset, Cécile Henquell, Isabelle Schuffenecker, Audrey Mirand

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Enterovirus Surveillance Network1
Author affiliation: Hospices Civils de Lyon, Centre National de Référence des Entérovirus–Laboratoire Associé, Lyon, France (M. Jeannoël, S. Dan, D. Parraud, J. Lebeurre, L. Josset, I. Schuffenecker); Université Clermont Auvergne, Clermont-Ferrand (M. Bisseux, E. Creuzet, H. Chabrolles, C. Henquell, A. Mirand); Centre Hospitalier Universitaire de Clermont-Ferrand, Centre National de Référence des Entérovirus–Laboratoire Coordonnateur, Clermont-Ferrand, France (M. Bisseux, A. Brebion, H. Chabrolles, A. Mirand); Université Claude Bernard Lyon 1, Villeurbanne, France (S. Dan, D. Parraud, L. Josset); Université Clermont Auvergne, Clermont-Ferrand (J. Bailly)
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Figure 3

Figure 3. Percentages of positive samples, by week and by age group, from report on national surveillance of enterovirus D68 upsurge, France, 2021–2024. Data are based on routine hospital strategies of each of the 2 NRLs. To determine whether the 2024 upsurge had distinct epidemiologic features compared with previous years, we compared the positivity rate of samples in 2024 with those in 2021–2023 (weeks 36–48) in both NRLs. We included 3 age groups: children <5 years of age (data for both NRLs), children 5–17 years of age (data only for NRL1), and adults >17 years old (data only for NRL1). NRL, national reference laboratory; W, week.
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