What food-borne illness has the highest fatality rate?

The food-borne illness with the highest fatality rate is ListeriOSis, caused by the bacterium Listeria monocytogenes. It is particularly dangerous for pregnant women, newborns, the elderly, and individuals with weakened immune systems, leading to severe complications such as meningitis and septicemia. The mortality rate can be as high as 20-30% in high-risk populations. Proper food handling and cooking practices are essential to prevent this illness.