Outbreaks, Incidents & Ongoing Situations

National & International Monitoring

Active Monitoring Programs

Situation Reports (SitReps)

Situation reports summarize preliminary findings received from state, local, territorial, tribal, and federal partners. Reports are subject to verification and may change as investigations progress.

Notice on Data Interpretation

Early reports may include inconsistencies due to reporting delays, classification differences, and evolving case definitions.

Reports & Downloadable Documents

The following documents provide detailed summaries of recent disease surveillance, public health incidents, and ongoing investigations. Reports are provided in PDF format and may be updated as new information becomes available.

Note: Some documents may contain preliminary or unverified data.