10 foods at greatest risk of food poisoning Children and the elderly are at greatest vulnerability due to the immune system in children not being well developed and in the elderly being debilitated. 1. Unpasteurised beverages Milk or juice that does not undergo the pasteurization process may contain contamination and if ingested may cause intoxication. Especially pregnant women should avoid unpasteurized milk and juices. 2 eggs There is a risk of contracting salmonella bacteria when…"10 foods at greatest risk of food poisoning"