TOTAL CONFIRMED CASES
412
Across reporting states
HOSPITALIZATIONS
28
6.8% hospitalization rate
STATES AFFECTED
14
Multi-state traceback
PEAK ONSET WEEK
Week 4
Onset curve crest
CDC OUTBREAK STATUS
Resolved
Closure confirmed by CDC
Produce Vector Traceback Matrix
Multi-Cluster Isolation
Select suspected fresh produce food vectors to simulate traceback investigation corridors and observe attribution weights.
EPIDEMIOLOGICAL SCRUBBER (WEEKS 1 - 12)
Week 12 (Investigation Resolved)
W1: Initial Cluster
W4: Peak Onset
W8: Traceback Confirmed
W12: Declared Over
State-Level Distribution & Trace Status
| Jurisdiction | Primary Vector | Cases | Trace Status |
|---|
Epidemic Curve (Epi-Curve)
Onset by Week
Weekly illness onset distribution for Cyclospora cayetanensis infections. Surveillance reflects incubation (2–14 days) and CDC reporting lag.
Vector Traceback Confidence
Attribution Model:
High (Traceback Confirmed)
Closure Confidence:
100% CDC Verified
Public Health Investigation Brief: Cyclospora Outbreak Resolution
Official synthesis documenting clinical case surveillance, traceback convergence on suspect produce lots, and criteria met for outbreak termination.
OUTBREAK NAME
Multi-State Cyclospora Outbreak 2026
PRIMARY VECTOR IDENTIFIED
Imported Fresh Produce (Basil/Berries)
TOTAL CASES / HOSPITALIZATIONS
412 / 28
TOTAL STATES INVOLVED
14 States
INVESTIGATION DURATION
12 Weeks
CDC CLOSURE DECLARATION
Declared Over by CDC
Traceback Findings & Epidemiologic Conclusion:
Whole-genome sequencing and supply chain tracebacks conducted in coordination with the FDA and state health departments successfully identified contaminated fresh produce lots (fresh basil and imported berries). Following product expiration, distributor recalls, and two full 14-day incubation periods without new reported cases, the CDC has officially declared the Cyclospora outbreak over.