The accuracy of the National Equine Database in relation to vector-borne disease risk modelling of horses in Great Britain.
Authors: Robin C A, Lo Iacono G, Gubbins S, Wood J L N, Newton J R
Journal: Equine veterinary journal
Summary
# Editorial Summary The National Equine Database serves as Britain's primary resource for mapping horse population distribution and owner contact details, yet until this work, its reliability for disease surveillance and outbreak response had never been formally evaluated. Robin and colleagues examined data quality through two parallel approaches: scrutinising 17,048 passports during routine local authority inspections between 2005–2010, and distributing questionnaires to over 11,000 horse owners to identify discrepancies between recorded and actual information. The findings revealed concerning gaps in data currency: whilst only 9.1% of passports checked showed non-compliance overall, the owner survey painted a starker picture, with 27.5% classified as obsolete—including records for deceased animals (11.7%) and entries with incorrect ownership details (15.8%). Geographic separation between horse location and owner address proved minimal for most holdings, with 92% of horses residing within 10 km of their registered owner, though this relationship was significantly influenced by land use patterns, with rural properties showing tighter clustering than urban postcodes. These results matter considerably for contingency planning around vector-borne diseases and other exotic incursions: whilst NED data are fundamentally sound for population-level modelling, the proportion of obsolete and inaccurate records could substantially impede rapid location and contact tracing during an outbreak response. Practitioners and disease control planners should recognise that adjusting risk models for documented spatial separation patterns and accounting for data obsolescence rates will be essential for accurate predictive work and effective emergency response logistics.
Read the full abstract on PubMed
Practical Takeaways
- •Passport records and NED data may be significantly out of date; verify current ownership and location directly with owners rather than relying on database records alone during disease investigations
- •Rural practices should expect closer alignment between horse location and owner address, while urban practices may need to account for greater spatial separation in outbreak response planning
- •Consider updating local authority inspection protocols and owner education programs to reduce obsolete records and improve data accuracy for rapid disease response capability
Key Findings
- •9.1% of passports (1,558/17,048) were noncompliant during 2005-2010 local authority inspections, with 5.6% containing inaccurate information and 3.5% missing data
- •27.5% of owner-submitted passports (380/1,382) were obsolete, including 11.7% for deceased horses and 15.8% with incorrect ownership details
- •92% of horses resided within 10 km of their owners' home address, with higher co-location probability in rural versus urban areas
- •53% of owners kept horses at home, indicating need for spatial adjustment factors in disease risk modelling