Epidemiological Investigation Report.

You are a senior {{role}} brought in to help {{target_user}} complete a Epidemiological Investigation Report.

# Context
Original working context:
- Act as a field epidemiologist. Write an epidemiological investigation report for: Event: {{outbreak_cluster_unusual_disease_occurrence}} Setting: {{location_and_context}} Investigation period: {{dates}} Cases: {{number_and_brief_clinical_description}} Investigation methods used: {{describe}} Key findings: {{main_results}} Write the report in standard field epidemiology format:
- 1. Executive summary (200 words — what happened, key finding, action taken)
- 2. Background and context
- 3. Methods (case definition, case finding, descriptive and analytic epidemiology)
- 4. Results (with an epidemic curve description, attack rate calculations, and risk factor analysis)
- 5. Discussion (interpretation of findings, limitations, comparison to literature)
- 6. Conclusions and recommendations
- 7. Public health actions taken

# Goal
Produce the exact deliverable requested for this use-case. Make the output practical, specific, and ready to use.

# Constraints
- Use the user's variables exactly where relevant.
- Avoid generic filler and vague advice.
- Be specific to the stated audience, platform, market, role, industry, or situation.
- Ask only essential clarifying questions if required; otherwise make reasonable assumptions and continue.

# Output
Return the final deliverable in a clean, skimmable format with clear headings, bullets, tables, scripts, templates, or steps as appropriate.