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Resurgence of Respiratory Syncytial Virus in Children: An Out-of-Season Epidemic in Portugal

Overview of attention for article published in Acta Medica Portuguesa, January 2023
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Title
Resurgence of Respiratory Syncytial Virus in Children: An Out-of-Season Epidemic in Portugal
Published in
Acta Medica Portuguesa, January 2023
DOI 10.20344/amp.18589
Pubmed ID
Authors

Ana Rita Torres, Raquel Guiomar Guiomar, Nuno Verdasca, Aryse Melo, Ana Paula Rodrigues, on behalf of Laboratórios para o Diagnóstico da Gripe

Abstract

An out-of-season increase in respiratory syncytial virus (RSV) incidence was observed in Portugal from June 2021 onwards, revealing a continuing surge in cases throughout 2021/2022 autumn/winter. We aimed to describe this out-of-season epidemic and define its epidemic period, by analysing RSV incidence from week 40 of 2020 (2020-W40) to week 18 of 2022 (2022-W18). Surveillance data on weekly RSV laboratory confirmed cases, in Portugal, was used to monitor RSV incidence using CUSUM test methodology for count data. In 2021-W23, the CUSUM score identified a significant increase in the risk of RSV. By that time, the percentage of RSV positive tests rose from 1% in 2021-W22 (3/265) to 6% in 2021-W23 (18/298). Despite a sharp decrease in RSV incidence on 2021-W33 and on 2022-W02, the CUSUM score stayed over the limit up to 2022-W07, indicating that the RSV activity remained at an epidemic level. Distinct peaks of RSV cases were observed between 2021-W30 and 2021-W32 (average of 77 RSV cases per week) and between 2021-W39 and 2021-W41 (average of 79 RSV cases per week) with positivity rates around 60%. An out-of-season RSV epidemic was identified, with a longer epidemic period compared with previous seasons. Possible reasons include relaxation of COVID-19 physical distancing measures and a greater proportion of population susceptible to disease. As several factors may change the pattern of RSV activity, countries should implement year-round surveillance RSV surveillance systems. These findings might have an impact on public health planning regarding future RSV surges, namely, on the palivizumab prophylaxis period for high-risk infants.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 14 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 14 100%

Demographic breakdown

Readers by professional status Count As %
Unspecified 2 14%
Other 1 7%
Student > Bachelor 1 7%
Student > Ph. D. Student 1 7%
Student > Master 1 7%
Other 2 14%
Unknown 6 43%
Readers by discipline Count As %
Medicine and Dentistry 3 21%
Unspecified 2 14%
Chemical Engineering 1 7%
Psychology 1 7%
Biochemistry, Genetics and Molecular Biology 1 7%
Other 0 0%
Unknown 6 43%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 January 2023.
All research outputs
#16,063,069
of 25,392,582 outputs
Outputs from Acta Medica Portuguesa
#115
of 451 outputs
Outputs of similar age
#231,302
of 472,544 outputs
Outputs of similar age from Acta Medica Portuguesa
#1
of 10 outputs
Altmetric has tracked 25,392,582 research outputs across all sources so far. This one is in the 34th percentile – i.e., 34% of other outputs scored the same or lower than it.
So far Altmetric has tracked 451 research outputs from this source. They receive a mean Attention Score of 1.9. This one has gotten more attention than average, scoring higher than 71% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 472,544 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 47th percentile – i.e., 47% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 10 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them