Six students order meals at a local restaurant.Which of the following students are at highest risk for illness?

Question

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Escherichia coli O157:H7 can produce a strong cytotoxin that can cause a potentially fatal hemorrhagic colitis.Hamburger is often involved in outbreaks,since the grinding process exposes pathogens on the surface of the whole meat to the interior of the ground meat,effectively mixing the once-exterior bacteria thoroughly throughout the hamburger so that searing the surface no longer suffices to kill all bacteria.Also,hamburger is often made of meat ground from several sources.The best protection against foodborne pathogens is to thoroughly cook food before eating it.Salmonella is also transmitted by undercooked foods such as eggs,poultry,dairy products,and seafood.Consequently,students eating very rare hamburger and undercooked eggs are at high risk.The food items requested by the first (salad with chicken strips and dressing)and third (tuna salad sandwich with extra mayonanaise)students are at the lowest risk for illness.These foods have been thoroughly cooked which helps to assure that potential bacteria has been destroyed.

Six Students Order Meals at a Local Restaurant