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Causes/Diarrhoeal diseases

Diarrhoeal diseases

Children under 5 · Declining trend

Diseases causing severe dehydration through frequent watery stools. Cholera, rotavirus, and E. coli are common causes. Largely preventable with clean water and sanitation.

Deaths / year

1,500,000

Deaths / day

4,110

Deaths / hour

171

Deaths / second

0.05

Share of all global deaths

2%

1,500,000 of 62,000,000 total deaths

Risk Factors

Unsafe water
Poor sanitation
Malnutrition
Lack of oral rehydration
Lack of vaccination

Age group most affected

Children under 5

Global trend

Declining

Read more on this topic

How Many People Die From Diarrhoea Every Day

Diarrhoeal disease kills around 4,100 people every day, many of them small children. The causes, the countries, the trend and the cheap fixes that work.

How Many Children Die Every Day and What Actually Kills Them

Around 13,700 children under five die every day, and most of those deaths are preventable. Here is the data by cause, by country and by what works.

How Many People Die From Hunger Every Day: The Quiet Emergency

Hunger kills roughly 24,600 people every day, most of them children under five. Here is what the data shows about who dies, where, and why.

How Many People Die From Cholera Every Year?

Reported cholera deaths hit 7,870 in 2025, the most since 1999, and the true toll may reach 143,000 a year. The data, the outbreaks and the vaccine gap.

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Data sourced from WHO and UN.