食源性疾病第 13 / 320 题
Salmonella Typhi (which causes typhoid fever) differs from nontyphoidal Salmonella mainly because it:
a.Is not one of the Big 6 pathogens
b.Only affects animals, never humans
c.Lives only in humans and is spread by infected food handlers
d.Is destroyed by refrigeration
解析
Salmonella Typhi lives only in humans and is spread when an infected food handler contaminates food, often via ready-to-eat items and beverages. It is one of the Big 6. Refrigeration does not destroy it, and it clearly affects humans, causing typhoid fever.
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