Influenza-Like Illness
ER visit proportion by borough · NYC DOHMH EpiQuery · Wk42 2025 – Wk3 2026
Seed Data — No Live API Available
ILI surveillance data is sourced from NYC DOHMH EpiQuery — no public REST endpoint is available for syndromic surveillance. This is a civic data gap. Charts show manually seeded Wk42 2025 – Wk3 2026 figures. NYC DOHMH updates EpiQuery weekly; data here is refreshed each flu season.
ILI ER Visits — All Boroughs + Citywide
Jan 2026% of all ER visits · Wk42 2025 – Wk3 2026
Adult Flu Vaccination Rate by Borough
2023% vaccinated · NYC DOHMH 2023–24 season
About ILI Surveillance
ILI (Influenza-Like Illness) is defined as fever ≥100°F plus cough or sore throat. Rate = % of all ER visits with ILI diagnosis. NYC DOHMH pulls from 53 sentinel hospitals.
Vaccination data: NYC DOHMH 2023–24 season survey of adults 18+. The Bronx has the lowest vaccination rate and highest ILI burden — a consistent pattern.