Research Series

Experimental USU pilots built from public evidence

Each report separates what the source directly measures from what WSI models, then explains whether the USU layer changes interpretation or primarily supplies a common burden unit.

Completed portfolio

The first three pilots span an acute infectious disease, a humanitarian severity classification, and a child-nutrition prevalence indicator.

Published pilotCumulativeP2 evidence-informed

Reported Dengue in the Americas, 2025

Regional surveillance evidence with a simple cumulative USU model across reported episodes.

45.4 million USU

Deterministic mapping range: 18.2-95.5 million USU

Scope: Americas regionKey finding: Severe episodes contribute about 0.49% of central modeled burden; no country rank was produced.

View series Report PDF

Published pilotUSU/dayP1 illustrative

Acute Food Insecurity Across 14 Cadre Harmonisé Countries, June-August 2026

Harmonized severity evidence for analyzed populations with a one-day experimental USU burden rate.

109 million USU/day

Deterministic mapping range: 82.5-136 million USU/day

Scope: analyzed populations in 14 CH countriesKey finding: Country ordering is unchanged from Phase 3+ source indicators.

View series Report PDF

Published pilotUSU/dayP1 illustrative

Child Wasting and Severe Wasting, 2024

Global and regional JME evidence with a one-day experimental USU burden rate.

55.9 million USU/day globally

Deterministic mapping range: 27.9-83.8 million USU/day

Scope: global and four printed regional groupsKey finding: Severe wasting contributes 44.4% of central modeled burden; regional ordering is unchanged.

View series Report PDF

How to read the library

Model typeCumulative values and daily-equivalent rates answer different questions and are never ranked together.

Mapping maturityP1 identifies illustrative pilot mappings; P2 identifies evidence-informed pilot mappings.

Deterministic mapping rangeThe displayed range reflects low and high modeling scenarios, not statistical uncertainty.

MortalityDeaths remain separate from the experimental USU estimate.