Epidemiological and genetic characteristics of respiratory syncytial virus infection in children from Hangzhou after the peak of COVID-19.
J Clin Virol
; 158: 105354, 2023 01.
Article
in English
| MEDLINE | ID: covidwho-2150032
ABSTRACT
BACKGROUND:
Respiratory syncytial virus (RSV) is one of the main pathogens that causes acute lower respiratory tract infection (ARTI) in infants. During the Coronavirus Disease 2019 (COVID-19) pandemic, although strict interventions have been implemented, RSV infection has not decreased.OBJECTIVES:
To study the epidemiological and genetic characteristics of RSV circulating in Hangzhou after the peak of COVID-19.METHODS:
A total of 1225 nasopharyngeal swabs were collected from outpatients with ARTIs from July 2021 to January 2022 in The Children's Hospital, Zhejiang University School of Medicine.RESULTS:
A total of 267 (21.79%) of the 1225 samples were RSV positive. There was no gender bias. However, an obvious age preference for infection was observed, and children aged 3-6 years were more susceptible, which was very different from previous RSV pandemic seasons. Phylogenetic analysis of 115 sequenced RSV isolates showed that all the RSV-A viruses belong to the ON1 subtype, which could be clustered into three clusters. While all the RSV-B viruses belong to BA9. Further analysis of the mutations highlights the fixation of ten mutations, which should be given extra attention regarding their biological properties.CONCLUSION:
The incidence of RSV infection in preschool children reported in this study is high. Phylogenetic analysis showed that the subtype A ON1 genotype was the dominant strain in Hangzhou from July 2021 to January 2022.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Respiratory Tract Infections
/
Respiratory Syncytial Virus, Human
/
Respiratory Syncytial Virus Infections
/
COVID-19
Type of study:
Observational study
/
Randomized controlled trials
Limits:
Child, preschool
/
Humans
/
Infant
Language:
English
Journal:
J Clin Virol
Journal subject:
Virology
Year:
2023
Document Type:
Article
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