Affiliations:
2 UK Health Security Agency, London, England, United Kingdom (UK)
3 National Institute of Public Health, Bucharest, Romania
4 Cantacuzino National Military-Medical Institute for Research and Development, Bucharest, Romania
5 Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
6 Public Health Institute of the Republic of Srpska, Banja Luka, Bosnia and Herzegovina
7 Faculty of Medicine University of Banja Luka, Banja Luka, Bosnia and Herzegovina
8 General Directorate of Public Health, Ankara, Türkiye
9 National Research Institute, Warsaw, Poland
10 National Public Health Center under the Ministry of Health, Vilnius, Lithuania
11 National Public Health Surveillance Laboratory, Vilnius, Lithuania
12 Ministry for Health Regulation, Pieta, Malta
13 University of Geneva Hospitals, Geneva, Switzerland
14 Laboratoire national de santé, Dudelange, Luxembourg
15 Croatian Institute of Public Health, Zagreb, Croatia
16 National Laboratory of Health, Environment and Food, Ljubljana, Slovenia
17 National Institute of Public Health, Ljubljana, Slovenia
18 Institute of Virology, Vaccines and Sera Torlak, Belgrade, Serbia
19 Institute of Public Health of Serbia, Belgrade, Serbia
20 National Agency for Public Health, Chişinău, Republic of Moldova
21 Centre for Disease Prevention and Control, Riga, Latvia
22 Riga East university hospital, Riga, Latvia
23 Robert Koch Institute, Berlin, Germany
24 Centre for Infectious Disease Control, Bilthoven, The Netherlands
25 Carlos III Health Institute, Madrid, Spain
26 Institut Pasteur, Paris, France
27 Santé Publique France, Saint Maurice, France
28 Statens Serum Institute, Copenhagen, Denmark
29 National Institute of Public Health, Prague, Czechia
30 National Public Health Center, Budapest, Hungary
31 The Directorate of Health, Reykjavik, Iceland
32 The National University Hospital of Iceland, Reykjavik, Iceland
33 Public Health Wales, Cardiff, Wales, United Kingdom
34 Hellenic Pasteur Institute, Athens, Greece
35 National Public Health Organization, Athens, Greece
36 The Estonian Health Board, Tallinn, Estonia
37 Sciensano, Brussels, Belgium
38 Public Health Authority of the Slovak Republic, Bratislava, Slovakia
39 Sanitary and Epidemiological Welfare and Public Health Service of the Republic of Uzbekistan, Toshkent, Uzbekistan
40 Finnish Institute for Health and Welfare, Helsinki, Finland
41 Public Health Agency, Belfast, Northern Ireland, United Kingdom
42 Belfast Health and Social Care Trust, Belfast, Northern Ireland, United Kingdom
43 Smorodintsev Research Institute of Influenza, St Petersburg, Russian Federation
44 Republican Center for Hygiene, Epidemiology and Public Health, Minsk, Belarus
45 Republican Research and Practical Center for Epidemiology and Microbiology, Minsk, Belarus
46 Institute of Public Health of Montenegro, Podgorica, Montenegro
47 National Center for disease control and prevention, Yerevan, Armenia
48 National Center for Disease Control and Public Health, Tbilisi, Georgia
49 Public Health Center of the Ministry of Health of Ukraine, Kyiv, Ukraine
50 Israel Ministry of Health, Ramat Gan, Israel
51 West of Scotland Specialist Virology Centre, Glasgow, Scotland, United Kingdom
52 Public Health Scotland, Glasgow, Scotland, United Kingdom
53 National Institute of Health Doctor Ricardo Jorge, Lisbon, Portugal
54 National Virus Reference Laboratory, Dublin, Ireland
55 Health Protection Surveillance Centre, Dublin, Ireland
56 National Institute of Public Health of Kosovo, Prishtina, Kosovo11This designation is without prejudice to positions on status, and is in line with UNSCR 1244 and the ICJ Opinion on the Kosovo Declaration of Independence. All references to Kosovo in this document should be understood to be in the context of the United Nations Security Council resolution 1244 (1999).
57 Ministry of Health and Medical Industry of Turkmenistan, Ashgabat, Turkmenistan
58 National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria

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Table 1: Summary breakdown of RSV data by surveillance system for the 2020/21 (weeks 40/2020 to 39/2021) and 2021/22 (weeks 40/2021 to 39/2022) seasons and corresponding inter-seasonal periods, with percentage positivity in brackets, and previous seasons (seasonal and inter-seasonal periods), in the selection of countries included. Reporting at least one specimen tested. Note that the 50% was based on 10 specimens tested in one country.