It is normally associated with a lack of safe water or poor sanitation.

Polio is a virus that spreads in areas with poor sanitation.

Human rights organisations say the prison has poor sanitation and suffers from overcrowding.

It particularly affects countries with low immunisation rates and poor sanitation, health experts say.

Zimbabwean health officials have blamed the outbreak on water shortages and poor sanitation facilities.

Polio spreads through contaminated food and water and thrives in areas with poor sanitation.

Public health from poor sanitation was also picked up on.

Instead, they must tackle the poor sanitation that causes malnutrition, via infection and disease.

The illness is more common in places with poor sanitation, overcrowded households and water shortages.

Unsafe water and poor sanitation also cause extensive disease and death, especially among malnourished children.

It thrives during the rainy season... combine that with poor sanitation and lack of awareness.

It occurs in places with poor sanitation and can be treated by drinking clean fluids.

He was complaining about a stomach ulcer and a skin allergy because of poor sanitation.

Overcrowding, mud and poor sanitation spreads disease quickly.

That figure is expected to rise as conditions of poor sanitation and dirty drinking water persist.

A national vaccination drive has begun in Afghanistan against polio, which spreads in areas with poor sanitation.