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© Research
Publication : Virus research

Temporal dynamics of RSV shedding and genetic diversity in adults during the COVID-19 pandemic in a French hospital, early 2021.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Virus research - 29 Sep 2022

Coppée R, Chenane HR, Bridier-Nahmias A, Tcherakian C, Catherinot E, Collin G, Lebourgeois S, Visseaux B, Descamps D, Vasse M, Farfour E,

Link to Pubmed [PMID] – 36181977

Link to DOI – 10.1016/j.virusres.2022.198950S0168-1702(22)00278-7

Virus Res 2022 Sep; 323(): 198950

Human respiratory syncytial virus (RSV) is responsible of lower respiratory tract infections which may be severe in infants, elderly and immunocompromised adults. Europe and North-American countries have observed a massive reduction of RSV incidence during the 2020-2021 winter season. Using a systematic RSV detection coupled to SARS-CoV-2 for all adult patients admitted at the Foch hospital (Suresnes, France) between January and March 2021 (n = 11,324), only eight RSV infections in patients with prolonged RNA shedding were diagnosed. RSV whole-genome sequencing revealed that six and two patients were infected by RSV groups A and B, respectively. RSV carriage lasted from 7 to at least 30 days disregarding of RSV lineage. The most prolonged RSV shedding was observed in an asymptomatic patient. We detected novel patient-specific non-synonymous mutations in the G glycoprotein gene, including a double identical mutation in the repeated region for one patient. No additional mutation occurred in the RSV genome over the course of infection in the four patients tested for. In conclusion, our results suggest that the temporal shift in the RSV epidemic is not likely to be explained by the emergence of a high frequency, unreported variant. Moreover, prolonged RSV carriages in asymptomatic patients could play a role in virus spread.