Vegetables rarely appear at the top of that list.
This is understandable because most vegetables are naturally rich in beneficial nutrients and contain relatively little saturated fat.
However, nutritional quality and microbiological safety are two different matters.
A food may contain vitamins, minerals, antioxidants, and dietary fiber while also carrying harmful bacteria.
Likewise, a freshly harvested vegetable can become contaminated during growing, transportation, handling, preparation, or storage.
Vegetables often grow in soil or close to the ground. During cultivation, they may come into contact with irrigation water, animals, fertilizers, agricultural equipment, or workers’ hands.
Contamination can also occur after harvesting.
For example, produce might be placed on an unclean surface, washed with contaminated water, or prepared using kitchen utensils that previously touched raw meat.
Because some vegetables are eaten raw, harmful microorganisms may survive until consumption.
The U.S. Food and Drug Administration explains that proper cleaning and handling reduce the risk of illness, although washing cannot guarantee the removal of every microorganism.
