ArticleLancet regional health. Americas2026
Uncovering the post-pandemic timing of influenza, RSV, and COVID-19 driving seasonal influenza-like illness in the United States: a retrospective ecological study.
Article in Lancet regional health. Americas, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed.
- Integrating Predictive Analytics into Hospital Automation: Comparative Evaluation of Prediction Models for Patient Monitor Demand in Operating Rooms.Bioengineering (Basel, Switzerland) · 2026Article
- Genomic Diversity of Human Respiratory Syncytial Virus (HRSV) Type A in a Pediatric Cohort in the United States After the Onset of the COVID-19 Pandemic.Microorganisms · 2026Article
- Comparison of the Clinical Course of Viral Respiratory Infections in Hospitalized Patients During the 2025/2026 Season in Poland.Vaccines · 2026Article
- A real-time early warning system to anticipate respiratory disease outbreaks using transfer learning.Nature communications · 2026Article
- Editorial: New discoveries and challenges in pediatric infectious diseases: epidemiological, clinical, and pathogenic advances.Frontiers in pediatrics · 2026Article
- Reconstructing severe acute respiratory infection dynamics from ICD-10 hospital discharge data: a 10-year analysis of 11.2 million discharges in Ecuador, 2014-2023.Frontiers in public health · 2026Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Background: Influenza and respiratory syncytial virus (RSV) are major contributors to the burden of seasonal influenza-like illnesses (ILI) in the US. The prevention and treatment of ILI varies substantially across age groups and in cost and administration schedule. This study aimed to characterize the timing and ordering of RSV, influenza, and COVID-19 epidemics in the post-pandemic period to inform public health preparedness. Methods: We implemented a series of independent regression models to infer the contribution of each of these diseases to seasonal ILI syndromic indicators. We further implemented anomaly-detection algorithms on data from the US Centers for Disease Control and Prevention National Syndromic Surveillance Program for the 2022-23, 2023-24, and 2024-25 ILI seasons to identify the timing of onsets and peaks of RSV, influenza, and COVID-19. Findings: A total of 148 state-ILI seasons were analyzed. In 114 out of 148 (77.0%) of analyzed seasons, volume of RSV emergency department (ED) visits peaked before influenza ED visits. The median time difference between peaks of RSV and peaks of influenza was +3.0 weeks (95% percentile range: -7.0, +7.0 weeks; interquartile range: 5.0 weeks). The timing of RSV and influenza onsets were found to occur more synchronously in the 2023-2024 and 2024-2025 ILI seasons. The timing of COVID-19 outbreaks did not show a consistent seasonal pattern across the study period. Interpretation: RSV epidemics frequently reach peak volume before influenza epidemics across the US. Healthcare professionals and public health authorities should anticipate increases in RSV cases and hospitalizations at the start of the annual ILI season and establish infrastructure and planning to handle incoming surges of both RSV and influenza appropriately. Funding: CDC Center for Forecasting and Outbreak Analytics; National Institutes of Health.
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