Yellow Fever Case Definition (WHO 2010)
Classifies a yellow fever case by WHO 2010 definitions: suspected, probable or confirmed, applying the separate 30-day and 14-day vaccine windows to antibody and virological results.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Acute onset of fever
- Yes
- Jaundice within 14 days of the first symptoms
- Yes
- Yellow fever vaccination before onset
- No yellow fever vaccine in the 30 days before onset
- Yellow fever IgM positive
- Yes
- Specific IgM, fourfold antibody rise, or specific neutralizing antibodies
- No
- Virus genome by PCR, antigen, or isolation
- No
Result: Probable yellow fever: a suspected case with yellow fever IgM (no recent vaccine), positive postmortem liver histopathology, or an epidemiological link.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Acute onset of fever
- Jaundice within 14 days of the first symptoms
- Yellow fever vaccination before onset
- Yellow fever IgM positive
- Positive postmortem liver histopathology
- Epidemiological link to a confirmed case or outbreak
- Specific IgM, fourfold antibody rise, or specific neutralizing antibodies
- Virus genome by PCR, antigen, or isolation
How this is calculated
Citation
WHO. Yellow fever surveillance and outbreak response: revision of case definitions, October 2010. Wkly Epidemiol Rec. 2010;85(47):465-472. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.