Chikungunya Case Definition (WHO/PAHO)
Classifies a chikungunya case by the WHO/PAHO 2015 definitions: suspected, confirmed, atypical, severe acute, or suspected or confirmed chronic, for surveillance and reporting.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Fever over 38.5 °C
- Yes
- Joint pain of acute onset
- Yes
- Lives in or visited an area with local transmission in the last 15 days
- Yes
- Positive PCR, serology or culture
- No
- Previous diagnosis with joint symptoms beyond 12 weeks
- No
Result: Suspected chikungunya: fever over 38.5 °C, acute joint pain, and residence in or a visit to an area with local transmission in the last 15 days.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Fever over 38.5 °C
- Joint pain of acute onset
- Lives in or visited an area with local transmission in the last 15 days
- Positive PCR, serology or culture
- Other organ manifestations (neurological, heart, skin, eye, liver, kidney, lung, blood)
- Life-threatening organ dysfunction needing hospitalization
- Previous diagnosis with joint symptoms beyond 12 weeks
How this is calculated
Citation
Ramon-Pardo P, Cibrelus L, Yactayo S, et al. Chikungunya: case definitions for acute, atypical and chronic cases. Wkly Epidemiol Rec. 2015;90(33):410-414, Table 1. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.