Impact of non-pharmaceutical interventions targeted at COVID-19 pandemic on influenza burden – a systematic review
Fecha
2020Autor
Fricke, Lara Marleen
Glockner, Stephan
Dreier, Maren
Lange, Berit
Resumen
Objectives: To better understand the impact of comprehensive COVID-19 targeted nonpharmaceutical interventions (NPIs) on influenza burden worldwide.
Methods: We conducted a systematic literature search in selected databases (PubMed,
WHO COVID-19), preprint servers (medRxiv, bioRxiv) and websites of European Public
Health institutes. Documents that compared influenza estimates in the 2019/2020 season
with previous seasons were included. Information synthesis was qualitative due to a high
heterogeneity in the number and periods of comparative seasons, outcome measures and
statistical methods.
Results: We included 23 records reporting from 15 countries/regions as well as 8 reports
from European Public Health agencies. Estimates in the 2019/2020 season based on
influenza virus tests (4 out of 7 countries/regions), defined influenza cases (8 out of 9),
influenza positivity rate (7 out of 8), and severe complications (1 out of 2) were lower than in
former seasons. Results from syndromic indicators, such as influenza-like-illness (ILI), were less clear or even raised (4 out of 7) after the influenza season indicating a misclassification
with COVID-19 cases.
Conclusions: Evidence synthesis suggests that NPIs targeted at SARS-CoV-2-transmission
reduce influenza burden as well. Low threshold NPIs need to be more strongly emphasized
in influenza prevention strategies.
Palabras clave
Systematic review; Influenza; Flu; COVID-19; SARS-CoV-2; Non-pharmaceutical interventions; SurveillanceEnlace al recurso
https://doi.org/10.1016/j.jinf.2020.11.039Colecciones
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