Challenges in Real-Time Surveillance Data

Note

Content will be drawn from the companion paper (Section 2: Challenges in real-time use of surveillance data). Tables will be interactive and filterable.

Summary of challenges in real-time surveillance data

Challenge	Description	Examples	Effect on analysis
Reporting delays	Time between event and report	Lab confirmation, manual entry, weekend effects	Right-truncation of recent counts
Data revisions	Changes to previously reported data	Duplicate removal, reclassification, date corrections	Retrospective changes to trends
Site drop-in/out	Facilities joining or leaving	New sites, closures, intermittent reporting	Apparent changes unrelated to disease
Other data quality	Additional data issues	Missing dates, format incompatibilities, missing strata	Reduced utility of recent data