Sentinel

Built for Public Health Communication · Plain-language health and claim checking

An early-signal board for public health — catch anomalies in everyday indicators before they're confirmed outbreaks.

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← Signal board

Syndromic ED · NSSP/BioSense aggregate

GI-illness ED visits

Gastrointestinal-coded emergency-department visits, nationally aggregated.

Alert · z +4.38

120

baseline (visits/day)

168

current (visits/day)

+4.38

deviation (z)

21-day history → today

Jun 6Jun 16Jun 26

range 0–168

The series runs flat near baseline, then ends on today's count — the point being scored. History mean ≈ 120, close to the stored baseline of 120.

How today scores

z = (current − baseline) / √baseline
  = (168 − 120) / √120 (11.0)
  = 4.38 → ≥ 3 alert

Run for Jun 26, 2026. This is an early signal to investigate — not a confirmed outbreak. Aggregate counts only; no individual-level data exists in this indicator. Adjust the value back on the signal board to watch the level respond.

Showcase demo for the Born Between 2 Generals summit. Showcase · best home: Nonprofit / public-good. Seeded with realistic sample data; runs payment-dark (no billing). Not a production system.