Drinking Water |
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Contaminated at its source |
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Contaminated during storage |
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Ice made from contaminated water |
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Food |
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Contaminated during or after preparation |
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Fruits and vegatables, freshened with contaminated
water and eaten raw. |
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Fruits and vegatables, grown at or near ground
level and fertilised with night soil or irrigated with water
contaminated with human waste, and with eaten raw |
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Infection usually spreads through contaminated water and food.
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Large epidemics are often related to faecal contamination of
drinking water supplies.
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