Philadelphia

Epidemiological Brief

Philadelphia presents the lowest epidemic risk score (11.9, LOW) among all 16 World Cup host cities. Pertussis is the leading component (incidence 1.5 per 100,000, adj 23.9), consistent with regional trends across mid-Atlantic states. COVID-19 contributes modestly (incidence 0.35 per 100,000), while influenza ILI% of 5.5% indicates low-level residual activity. Dengue (0.03 per 100,000) and mpox (0.07 per 100,000) are minor background signals. Measles data were not available for this reporting cycle; the Low coverage tier (50.4%) reflects this gap and warrants interpretive caution. Lincoln Financial Field medical teams should maintain standard influenza and respiratory illness triage protocols. Pennsylvania DOH should coordinate with Philadelphia Public Health to monitor for measles importation given the incomplete component picture. Tdap verification for attending children and unvaccinated adults is advisable given the pertussis signal. Despite the lowest overall score, organizers should avoid complacency, as low baseline risk can change rapidly with the influx of international visitors from higher-risk cities and countries.

Model v2.1.0 · Updated June 11, 2026