What age group does food poisoning mostly affect?

Very young and old: The transmission of infectious agents is more likely to affect people with impaired immune systems. This would include the very young and the very old.

Food Poisoning: Food poisoning can occur at anytime, any age, and any foods are susceptible. From water, salad, meats, and carbs, all food have potential for causing food poisoning. Throw in x-contamination and it's inevitable everyone will be affected at some point in their lives. Those that have weakened immune systems are always at greater risk.