In outbreak investigations, what is the purpose of a line list?

• A. To forecast weather patterns.
• B. To record staff schedules.
• C. To organize and summarize case data (time, place, person, and clinical information).
• D. To plan resource allocation for vaccination.

Answer: (C)

Organizing and summarizing case data is what a line list does in outbreak investigations. A line list is a table where each row is a case and each column captures essential information such as date of onset, place, person (age, sex, etc.), and clinical details like symptoms or lab results. This format makes it easy to sort, query, and visualize data, revealing time trends, geographic patterns, and who is affected, which guides the investigation and response. While line lists can inform other tasks, their primary purpose is to organize and summarize the case data.