Qualitative release assessment to estimate the likelihood of henipavirus entering the United Kingdom.
Authors: Snary Emma L, Ramnial Vick, Breed Andrew C, Stephenson Ben, Field Hume E, Fooks Anthony R
Journal: PloS one
Summary
# Editorial Summary: Henipavirus Risk Assessment for the United Kingdom Henipaviruses (Hendra and Nipah) are emerging zoonotic pathogens maintained in fruit bat reservoirs, predominantly *Pteropus* species, with expanding geographic distribution raising concerns about potential UK incursion. Researchers stratified the world into four epidemiological zones based on henipavirus occurrence, isolation history and fruit bat distribution, then conducted a qualitative release assessment evaluating multiple import pathways including fresh produce, bushmeat, live animals and human travel. Fruit imports from high-risk zones and bat bushmeat from the highest-risk zone carried low annual probability of viral release, whilst bat meat from secondary-risk zones, horses and companion animals from primary-risk zones, and infected travellers all posed very low to negligible risk. For equine practitioners, these findings suggest that whilst henipavirus introduction remains theoretically possible through fruit bat exposure pathways, direct equine imports and animal-related trade routes present minimal contemporary threat, though periodic reassessment of this risk profile is warranted as epidemiological circumstances evolve. The analysis underscores the value of structured biosecurity frameworks in identifying and monitoring emerging infectious disease entry points relevant to UK equestrian medicine and animal health more broadly.
Read the full abstract on PubMed
Practical Takeaways
- •Equine importers should be aware that horses from henipavirus endemic zones (Zone 1) present very low but measurable biosecurity risk; routine health screening remains appropriate for imported animals
- •UK equine practitioners are unlikely to encounter henipavirus in clinical practice, but awareness of the disease as an emerging zoonotic threat is prudent given ongoing geographic expansion of the virus
- •Current risk assessment supports existing import protocols for equine animals; periodic reassessment recommended as epidemiology of henipaviruses evolves
Key Findings
- •Importation of fruit from endemic zones and bat bushmeat from Zone 1 pose low annual probability of henipavirus release into the UK
- •Importation of bat meat from Zone 2, horses and companion animals from Zone 1, and human travel from Zone 1 present very low probability of henipavirus introduction
- •All other identified release routes for henipavirus entry to the UK assessed as negligible probability
- •Risk assessment identifies fruit bats (Pteropus spp.) as primary wildlife reservoir with geographic risk concentrated in specific world zones