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Mary Mallon, nicknamed Typhoid Mary, spread typhoid for years while working as a:

ANanny
BCook
CNurse
DTailor
Answer & Solution
Correct answer: B. Cook
1. She was a carrier with no symptoms. 2. She spread typhoid through food she cooked. 3. It is a classic case in medicine. _Source: syllabus Biology, Chapter 8, Human Health and Disease._
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