Table 1.
The design of the outbreak data for the Standard Analysis of Disease Investigation (SADI).
| Field name | Field description | Data format |
|---|---|---|
| FarmID | Unique farm identifier† | String |
| InfectedNo | Infected place number | Integer |
| NoticeNo | Legal notice number | Integer |
| PublicReport | If the infection is publicly reported | Boolean |
| SurveillanceType | Surveillance type which identified the farm | Categorical (public report/surveillance zone/tracing) |
| VisitDate | First visit date | Date |
| InfectionDate | Estimated infection date | Date |
| LesionAge | Age of oldest lesion seen | Numeric |
| ClinicalDate | Date of onset of clinical signs• | Date |
| DiagnosisDate | Date of diagnosis or laboratory confirmation | Date |
| SlaughterDate | Date when slaughter is completed | Date |
| DisposalDate | Date when disposal is completed | Date |
| CleanDate | Date when cleaning and disinfection is completed | Date |
| SpreadMechanism | Likely spread mechanism | Categorical (movement/contiguous property/associated property/local spread§/ other) |
| SourceFarm | Likely source farm (if known) | String |
| DairyInfected | Number of clinically infected dairy cattle | Integer |
| BeefInfected | Number of clinically infected beef cattle | Integer |
| SheepInfected | Number of clinically infected sheep | Integer |
| PigInfected | Number of clinically infected pigs | Integer |
| GoatInfected | Number of clinically infected goats | Integer |
| DeerInfected | Number of clinically infected deer | Integer |
| UpdateDate | Date when the data were last updated | Date |
†
Common farm identifiers to link with the other datasets, i.e., tracing data and population data.
‡
This field can automatically be filled in based on the visit date and oldest lesion age.
§
Local spread includes direct and indirect spread mechanisms such as unknown movements, general local farmer activities, aerosol or wind spread, fence contacts, and potentially wildlife spread.