Explore the data already available.

Current pages cover drinking water, food insecurity, child nutrition, dengue, displacement, and child and maternal mortality using trusted public sources.

Source results come first. Where available, experimental USU analyses are presented separately.

WSI explains what major measures count, how related figures differ, and what conclusions they can support.

What the numbers mean

Explore 45 measures of drinking water, hunger, nutrition, refugees, internal displacement, dengue, and mortality—including their units, time bases, overlaps, and limits.

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Household drinking water

WHO/UNICEF JMP · August 2025 release · Estimates 2015–2024

2.1 billion peoplelacked safely managed household drinking water globally in 2024

The deficit includes basic-only, limited, unimproved and surface-water services. Headcounts are derived from official coverage and population estimates.

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Dengue in the Americas

PAHO regional dengue surveillance · Epidemiological weeks 1–53 of 2025

4.46 million suspected episodes8,966 severe cases; 2,207 reported deaths

The regional burden was dominated by the very large number of reported non-severe episodes.

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Acute food insecurity

Cadre Harmonisé phase classifications · Displayed June–August 2026 period

52.3 million people in Crisis or worse2.81 million in Emergency or worse; coverage varies from 20% to 100%

The source shows the scale and severity of acute food insecurity across the analyzed populations.

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Child and maternal mortality

UN IGME 2025 (child estimates through 2024) · MMEIG revised 2025 (maternal estimates through 2023)

4.86 million estimated under-five deaths in 2024
260,000 estimated maternal deaths in 2023

Counts, rates, ratios, shares, lifetime risk, and trend statistics answer different questions. The brief keeps periods, denominators, uncertainty, subsets, and non-additivity explicit.

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Child wasting

UNICEF/WHO/World Bank Joint Child Malnutrition Estimates · 2024 global and regional prevalence estimates

42.8 million children affected by wasting12.2 million affected by severe wasting

Severe wasting affects a smaller population but contributes disproportionately to the experimental burden estimate.

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FIES food insecurity

FAOSTAT Food Insecurity Experience Scale · 2023–2025 source interpreted as one representative average year

125 complete country or territory prevalence records99 exact population records; 26 censored records reported per 100,000 only

FIES directly records food-access experiences across a broad country and territory set.

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Displacement

UNHCR Global Trends 2025 and IDMC GRID 2026

82.2 million peopleliving in internal displacement at the end of 2025

Refugee totals and annual movement counts answer different questions and are shown separately.

Open visual brief

More context in the reports

Public briefs turn the same evidence into short, readable summaries.