Not all of the following are typically collected as data elements on a notifiable disease case report. Which item is NOT typically collected?

• A. Geographic location
• B. Date of onset
• C. Vaccination status
• D. Genetic sequencing data

Answer: (D)

Notifiable disease case reports focus on essential, timely information that helps public health monitor trends, identify outbreaks, and take action. Geographic location (where the person lives) is included to map distribution and detect clusters; date of onset helps determine when the illness began and track the epidemic curve; vaccination status provides context about immunity and helps assess vaccine effectiveness and coverage in the population. Genetic sequencing data, while extremely useful for characterizing the pathogen and understanding transmission in specific investigations, is not part of routine case reports because it requires additional laboratory capacity, longer turnaround times, and careful data stewardship. Sequencing is typically collected in separate genomic surveillance workflows or during targeted outbreak analyses rather than on every standard notifiable disease report.