Listening Quiz: Điều Tra Bùng Phát Bệnh Qua Thực Phẩm – Easy Level

1. What is the main topic of the conversation?
2. What is the first step in the outbreak investigation?
3. What does Michael say they should ask the sick people about?
4. Why do they look for common foods among all cases?
5. What will they do after the investigation is finished?

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