Open Syndrome Acute Flaccid Paralysis (AFP)
Table of Contents
Authors: Division of Disease Surveillance and Response, Ministry of Health
Location: Kenya
Purpose #
Case definition for suspected polio
The definition #
Any case with weakness or floppiness of the limbs of sudden onset not due to trauma in a c hild less than 15 years of age, or any person of any age in whom a clinician suspects polio
Machine-readable definition #
The definition is available in JSON format following the Open Syndrome v1.0 specification:
{
"authors": [
"Division of Disease Surveillance and Response"
],
"category": "suspected",
"definition_type": "case_definition",
"description": "Case definition for suspected polio",
"human_readable_definition": "Any case with weakness or floppiness of the limbs of sudden onset not due to trauma in a c hild less than \n15 years of age, or any person of any age in whom a clinician suspects polio",
"inclusion_criteria": [
{
"logical_operator": "OR",
"type": "criterion",
"values": [
{
"name": "Weakness or floppiness of the limbs in a child 15 years old or less",
"type": "criterion",
"values": [
{
"description": "Weakness or floppiness of the limbs of sudden onset not due to trauma",
"name": "Acute flaccid paralysis",
"type": "symptom"
},
{
"attribute": "age",
"name": "15 years old or less",
"operator": "\u003c=",
"type": "demographic_criteria",
"unit": "years",
"value": 15
}
]
},
{
"description": "Any person of any age in whom a clinician suspects polio",
"name": "Clinical suspicion of polio",
"type": "professional_judgment"
}
]
}
],
"keywords": [
"polio",
"poliomyelitis",
"Africa"
],
"language": "English",
"location": "Kenya",
"open_syndrome_version": "1.0.0",
"organization": "Ministry of Health",
"published_at": "2025-02-08T11:56:57Z",
"published_by": [
"Open Syndrome Initiative"
],
"published_in": "https://opensyndrome.org",
"references": [
{
"url": "https://nphi.go.ke/sites/default/files/2024-02/Case%20definition%20Chart_0.pdf"
}
],
"scope": "broad",
"status": "draft",
"target_public_health_threats": [
"poliomyelitis"
],
"title": "Open Syndrome Acute Flaccid Paralysis (AFP)",
"version": "1.0.0"
}
Using the Definition #
Healthcare organizations can implement this definition through:
- Direct integration with surveillance systems
- API endpoints for real-time validation
- Manual case verification processes
Next Steps #
We encourage:
- Clinical feedback on the definition criteria
- Technical feedback on the implementation format
- Suggestions for additional symptoms or signs
- Reports of implementation experiences
Get Involved #
We welcome contributions and feedback from the community.