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. 2023 Jan;28(1):2200937.
doi: 10.2807/1560-7917.ES.2023.28.1.2200937.

Early and intense epidemic of respiratory syncytial virus (RSV) in Denmark, August to December 2022

Charlotte Munkstrup  1 , Frederikke Kristensen Lomholt  1 , Hanne-Dorthe Emborg  1 , Karina Lauenborg Møller  2 , Jesper Schak Krog  3 , Ramona Trebbien  3 , Lasse S Vestergaard  1
Affiliations

Early and intense epidemic of respiratory syncytial virus (RSV) in Denmark, August to December 2022

Charlotte Munkstrup et al. Euro Surveill. 2023 Jan.

Abstract

In the autumn of 2022, Denmark witnessed the second out-of-season epidemic of respiratory syncytial virus (RSV) following widespread societal preventive measures implemented against the coronavirus disease (COVID-19) pandemic during 2020 and 2021. Admissions peaked at twice the level of pre-pandemic seasons. Especially infants below 6 months of age were affected, but also adults over 45 years of age. The current epidemic is dominated by RSV subtype B, unlike the major RSV summer epidemic in 2021 dominated by RSV subtype A.

Keywords: COVID-19; RSV; SARS-CoV-2; epidemiology; respiratory syncytial virus; surveillance.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure 1
Figure 1
Respiratory syncytial virus (RSV) incidence rates for (A) cases and (B) admissions by week, Denmark, seasons 2017/18 to 2022/23
Figure 2
Figure 2
Respiratory syncytial virus (RSV) age dependent incidence rates for (A) cases and (B) admissions by week, Denmark, season 2022/23
Figure 3
Figure 3
Respiratory syncytial virus (RSV) age dependent admission incidence rate by week in Denmark from 2017 to 2022
See this image and copyright information in PMC

References

    1. Emborg HD, Carnahan A, Bragstad K, Trebbien R, Brytting M, Hungnes O, et al. Abrupt termination of the 2019/20 influenza season following preventive measures against COVID-19 in Denmark, Norway and Sweden. Euro Surveill. 2021;26(22):1-6. 10.2807/1560-7917.ES.2021.26.22.2001160 - DOI - PMC - PubMed
    1. Nielsen RT, Dalby T, Emborg HD, Larsen AR, Petersen A, Torpdahl M, et al. COVID-19 preventive measures coincided with a marked decline in other infectious diseases in Denmark, spring 2020. Epidemiol Infect. 2022;150:e138. 10.1017/S0950268822001145 - DOI - PMC - PubMed
    1. Statens Serum Institut (SSI). EPI-NYT uge 35, 2021. [Epi-News week 35 2021]. Copenhagen: SSI. [Accessed: 8 Dec 2022]. Danish. Available from: https://www.ssi.dk/aktuelt/nyhedsbreve/epi-nyt/2021/uge-35---2021
    1. Zheng Z, Warren JL, Artin I, Pitzer VE, Weinberger DM. Relative timing of respiratory syncytial virus epidemics in summer 2021 across the United States was similar to a typical winter season. Influenza Other Respir Viruses. 2022;16(4):617-20. 10.1111/irv.12965 - DOI - PMC - PubMed
    1. Delestrain C, Danis K, Hau I, Behillil S, Billard MN, Krajten L, et al. Impact of COVID-19 social distancing on viral infection in France: A delayed outbreak of RSV. Pediatr Pulmonol. 2021;56(12):3669-73. 10.1002/ppul.25644 - DOI - PMC - PubMed