Signa Health is the national early-warning desk for Liberia's fifteen counties — built with NPHIL, read by WHO and CDC. Facility reports, community whispers and border movements arrive on one screen, held against eight weeks of baseline. When the line bends, you know in minutes, not weeks.
"The Ebola response taught us that three days is the difference between a cluster and a country. Signa Health gives us those three days back."
A nurse in Lofa logs 6 cases of bloody diarrhoea on a tablet. The form takes 90 seconds, works offline, and syncs the moment signal returns.
An ensemble of CUSUM and Farrington models compares the count to 8 weeks of county baseline, weighted for rainfall and market days.
The on-call epidemiologist gets a single push — county, syndrome, severity score, suggested response.
If thresholds cross IHR (2005) criteria, a structured notification drafts itself and waits for the CMO's signature.