Philadelphia

Epidemiological Brief

Philadelphia's Santé signal is low across all tracked pathogens. Influenza A(H3N2) is the sole active contributor, with Pennsylvania recording 4,146 weekly cases in EW53 against the 52-week state maximum of 15,854 (normalized 26.2/100), indicating declining late-season activity. Measles: 0 new Pennsylvania cases in EW18 (15 YTD); existing state clusters appear contained with no recent acceleration. Mpox: 0 new cases this week (11 YTD). No hantavirus detections. The composite Santé score is 7.7 (low). Philadelphia presents the second-lowest composite score among US host cities this week. While the current epidemiological picture is reassuring, the substantial measles YTD count (15 cases) and proximity to the New York/New Jersey metro region—where influenza remains near peak—means that importation risk cannot be dismissed. Standard tournament public health protocols should be maintained: venue ILI surveillance, staff MMR documentation, and outbreak reporting chains to the Philadelphia Department of Public Health. No special escalation is warranted at this time. Sante Index v0 is a watching signal, not a forecast.

Model v0 · Updated Jun 8, 2026