Example of an Observations made about a location - an oyster farm

{
  "resourceType": "Observation",
  "id": "vp-oyster",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"vp-oyster\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Observation &quot;vp-oyster&quot; </p></div><p><b>identifier</b>: id: 20171014-1234 (OFFICIAL)</p><p><b>status</b>: preliminary</p><p><b>code</b>: <span title=\"  \n    Observations are often coded in multiple code systems.\n      - LOINC\n\t\t- or SNOMED\n      -and/or the source system may provides its own &quot;local&quot; code, which may be less or more granular than LOINC.\n\tIn this example there is only local codes\n    \">OYSTER TESTING <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://loinc.org/\">LOINC</a>#41857-4 &quot;Vibrio parahaemolyticus DNA [Presence] in Unspecified specimen by Probe and target amplification method&quot;; test-codes#VP MULTI PCR &quot;VP MULTI PCR&quot;)</span></span></p><p><b>subject</b>: <span>: Sonoma oyster farm</span></p><p><b>effective</b>: 2017-10-12</p><p><b>issued</b>: 15/10/2017 10:11:24 AM</p><p><b>performer</b>: <a href=\"practitioner-example-f005-al.html\">Practitioner/f005: A. Langeveld</a> &quot;Langeveld ANNE&quot;</p><p><b>value</b>: <span title=\"  results of this Qualtiattive PCR is a choice of Positive/Negative and Inconclusive  \">POSITIVE <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#10828004 &quot;Positive (qualifier value)&quot;; result-codes#POSITIVE)</span></span></p><p><b>interpretation</b>: Abnormal <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/3.1.0/CodeSystem-v3-ObservationInterpretation.html\">ObservationInterpretation</a>#A)</span></p><p><b>specimen</b>: <a name=\"group1\"> </a></p><blockquote><p/><p><a name=\"group1\"> </a></p><p><b>type</b>: animal</p><p><b>membership</b>: enumerated</p><blockquote><p><b>member</b></p><p><b>entity</b>: <a href=\"#bed1\">#bed1</a></p></blockquote><blockquote><p><b>member</b></p><p><b>entity</b>: <a href=\"#bed2\">#bed2</a></p></blockquote></blockquote><h3>ReferenceRanges</h3><table class=\"grid\"><tr><td>-</td><td><b>Text</b></td></tr><tr><td>*</td><td>NEGATIVE</td></tr></table></div>"
  },
  "contained": [
    {
      "resourceType": "Specimen",
      "id": "bed1",
      "note": [
        {
          "text": "Live Oysters Acc#20171014-1234 from Bed 1"
        }
      ]
    },
    {
      "resourceType": "Specimen",
      "id": "bed2",
      "note": [
        {
          "text": "Live Oysters Acc#20171014-1234 from Bed 2"
        }
      ]
    },
    {
      "resourceType": "Group",
      "id": "group1",
      "type": "animal",
      "membership": "enumerated",
      "member": [
        {
          "entity": {
            "reference": "#bed1"
          }
        },
        {
          "entity": {
            "reference": "#bed2"
          }
        }
      ]
    }
  ],
  "identifier": [
    {
      "use": "official",
      "system": "http://sonomacounty.ca.gov/Health/Public-Health/Laboratory",
      "value": "20171014-1234"
    }
  ],
  "status": "preliminary",
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "41857-4",
        "display": "Vibrio parahaemolyticus DNA [Presence] in Unspecified specimen by Probe and target amplification method"
      },
      {
        "system": "http://sonomacounty.ca.gov/Health/Public-Health/Laboratory/test-codes",
        "code": "VP MULTI PCR",
        "display": "VP MULTI PCR"
      }
    ],
    "text": "OYSTER TESTING"
  },
  "subject": {
    "display": "Sonoma oyster farm"
  },
  "effectiveDateTime": "2017-10-12",
  "issued": "2017-10-14T23:11:24Z",
  "performer": [
    {
      "reference": "Practitioner/f005",
      "display": "A. Langeveld"
    }
  ],
  "valueCodeableConcept": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "10828004",
        "display": "Positive (qualifier value)"
      },
      {
        "system": "http://sonomacounty.ca.gov/Health/Public-Health/Laboratory/result-codes",
        "code": "POSITIVE",
        "display": "POSITIVE"
      }
    ],
    "text": "POSITIVE"
  },
  "interpretation": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
          "code": "A",
          "display": "Abnormal"
        }
      ]
    }
  ],
  "specimen": {
    "reference": "#group1"
  },
  "referenceRange": [
    {
      "text": "NEGATIVE"
    }
  ]
}