{
  "resourceType": "SearchParameter",
  "id": "spark287",
  "meta": {
    "versionId": "spark287",
    "lastUpdated": "2015-10-02T12:20:36.386+00:00"
  },
  "url": "http://hl7.org/fhir/SearchParameter/Immunization-reaction",
  "name": "reaction",
  "publisher": "Health Level Seven International (Public Health and Emergency Response)",
  "contact": [
    {
      "telecom": [
        {
          "system": "other",
          "value": "http://hl7.org/fhir"
        }
      ]
    },
    {
      "telecom": [
        {
          "system": "other",
          "value": "http://www.hl7.org/Special/committees/pher/index.cfm"
        }
      ]
    }
  ],
  "date": "2015-09-22T03:47:23+00:00",
  "code": "reaction",
  "base": "Immunization",
  "type": "reference",
  "description": "Additional information on reaction",
  "xpath": "f:Immunization/f:reaction/f:detail",
  "xpathUsage": "normal",
  "target": [
    "Observation"
  ]
}