Mpox outbreak in France: epidemiological characteristics and sexual behaviour of cases aged 15 years or older, 2022

Publié le 14 décembre 2023
Mis à jour le 21 août 2024

BackgroundLocally-acquired mpox cases were rarely reported outside Africa until May 2022, when locally-acquired-mpox cases occurred in various European countries.AimWe describe the mpox epidemic in France, including demographic and behavioural changes among a subset of cases, during its course.MethodsData were retrieved from the enhanced national surveillance system until 30 September 2022. Laboratory-confirmed cases tested positive for monkeypox virus or orthopoxviruses by PCR; non-laboratory-confirmed cases had clinical symptoms and an epidemiological link to a laboratory-confirmed case. A subset of ≥ 15-year-old male cases, notified until 1 August, was interviewed for epidemiological, clinical and sexual behaviour information. Association of symptom-onset month with quantitative outcomes was evaluated by t- or Wilcoxon tests, and with binary outcomes, by Pearson's chi-squared or Fisher exact tests.ResultsA total of 4,856 mpox cases were notified, mostly in Île-de-France region (62%; 3,025/4,855). Cases aged ≥ 15 years were predominantly male (97%; 4,668/4,812), with 37 years (range: 15-81) as mean age. Between May and July, among the subset interviewed, mpox cases increased in regions other than Île-de-France, and mean age rose from 35 (range: 21-64) to 38 years (range: 16-75; p = 0.007). Proportions of cases attending men-who-have-sex-with-men (MSM) meeting venues declined from 60% (55/91) to 46% (164/359; p = 0.012); median number of sexual partners decreased from four (interquartile range (IQR): 1-10) to two (IQR: 1-4; p 

Auteur : Krug Catarina, Tarantola Arnaud, Chazelle Emilie, Fougère Erica, Velter Annie, Guinard Anne, Souares Yvan, Mercier Anna, François Céline, Hamdad Katia, Tan-Lhernould Laetitia, Balestier Anita, Lahbib Hana, Etien Nicolas, Bernillon Pascale, De Lauzun Virginie, Durand Julien, Fayad Myriam, De Valk Henriette, Beck François, Che Didier, Coignard Bruno, Lot Florence, Mailles Alexandra
Eurosurveillance, 2023, vol. 28, n°. 50, p. 27-37