Clinical Scorecard: Analysis of Respiratory Syncytial Virus Episodes During and Outside the Typical Season—United States, 2016–2020
At a Glance
Category
Detail
Condition
Respiratory Syncytial Virus (RSV) infection
Key Mechanisms
RSV causes respiratory illness with seasonal outbreaks primarily in fall, winter, and spring; off-season cases occur with distinct demographic and clinical characteristics
Target Population
Children (<18 years), especially infants; adults including older adults and those with underlying conditions
Care Setting
Hospital-based inpatient and outpatient encounters including emergency departments and ambulatory care
Key Highlights
RSV episodes occur both in-season (Dec–Feb) and off-season (Jun–Aug) with notable demographic and clinical differences.
Off-season pediatric RSV episodes disproportionately affect Black and Hispanic children and those with congenital or chronic conditions.
Higher antibiotic use observed in off-season pediatric RSV episodes compared to in-season episodes.
Guideline-Based Recommendations
Diagnosis
Use ICD-10-CM codes J12.1, J20.5, J21.0, or B97.4 to identify RSV episodes in hospital settings.
Define RSV seasonality narrowly as in-season (December–February) and off-season (June–August) for clearer epidemiologic assessment.
Management
Recognize increased antibiotic use in off-season pediatric RSV episodes; evaluate appropriateness to avoid unnecessary antibiotic exposure.
Consider underlying congenital or chronic conditions in management decisions, especially in off-season cases.
Monitoring & Follow-up
Monitor RSV seasonality trends regionally due to geographic variability in onset and offset.
Use surveillance data (e.g., NREVSS) to track RSV activity and inform timing of preventive interventions.
Risks
Increased susceptibility and severity in infants, older adults, and patients with underlying medical conditions.
Disparities in RSV burden among racial and ethnic minority groups, particularly in off-season episodes.
Patient & Prescribing Data
Pediatric patients with RSV episodes, including infants and children aged 1–4 years
Higher antibiotic prescription rates during off-season RSV episodes suggest potential overuse or differing clinical presentations requiring careful antibiotic stewardship.
Clinical Best Practices
Employ narrow seasonal definitions to accurately classify RSV episodes for epidemiologic and clinical purposes.
Identify and address racial and ethnic disparities in RSV burden and healthcare utilization.
Incorporate patient age and underlying conditions into risk stratification and management plans.
Leverage surveillance data to guide timing and targeting of RSV preventive measures such as immunization and monoclonal antibodies.
