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

Author:

Munkstrup Charlotte1ORCID,Lomholt Frederikke Kristensen1,Emborg Hanne-Dorthe1,Møller Karina Lauenborg2,Krog Jesper Schak3,Trebbien Ramona3,Vestergaard Lasse S.1

Affiliation:

1. Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark

2. Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark

3. Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark

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.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

Reference16 articles.

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2. COVID-19 preventive measures coincided with a marked decline in other infectious diseases in Denmark, spring 2020.;Nielsen;Epidemiol Infect,2022

3. 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

4. Relative timing of respiratory syncytial virus epidemics in summer 2021 across the United States was similar to a typical winter season.;Zheng;Influenza Other Respir Viruses,2022

5. Impact of COVID-19 social distancing on viral infection in France: A delayed outbreak of RSV.;Delestrain;Pediatr Pulmonol,2021

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