Shiga toxin-producing E. coli is called a toxin-mediated infection. What does that label describe?
a.The toxin is already in the food before it is eaten
b.The toxin is destroyed once the food reaches 145°F
c.The bacteria are eaten and make toxin inside the body
d.The bacteria multiply only on the surface of the food
解析
In a toxin-mediated infection the guest swallows living bacteria, which then produce toxin in the intestines. That is different from an intoxication such as Staphylococcus aureus, where the toxin is formed in the food beforehand, and it is why cooking ground beef to 155°F for 17 seconds prevents the illness.
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