Riskiest Foods

Safe handling and cooking of food are highly recommended and significantly cuts the risks, but won't guarantee that you'll always avoid contamination.

Leafy greens
Lettuce and other leafy greens are super healthy but also susceptible to contamination through improper processing or handling. Most of the bacteria are in the outer leaves, discard and rinse the rest a few times. Bagged salad should also be washed.

Potatoes
Food poisoning linked to this popular vegetable is often caused by dishes like potato salad that are improperly refrigerated. Potatoes can also be contaminated during agricultural processing. Scrub well and cook thoroughly.

Tomatoes
Salmonella can live in the raw fruit, but multiply when tomatoes are cut and left in a warm environment. Store items like fresh salsa in the fridge.

Beansprouts
The warm, moist conditions that are ideal for growing beansprouts are also great for cultivating bacteria. It’s recommended that children, the elderly, and anyone with a compromised immune system avoid consuming raw beansprouts.

Berries
Most cases of illnesses associated with berries occur from fruit that is contaminated by sick farm workers or exposed to dirty water. Rinse berries thoroughly and find trusted local source for in season fruit.

Source: http://uk.lifestyle.yahoo.com/11-riskiest-foods.html