Under the Microscope Hendra virus – a One Health success story Hume Field Queensland Centre for Emerging Brad McCall Infectious Diseases 39 Kessels Road, Coopers Plains Brisbane Southside Public Health Unit, Brisbane, Qld 4108, Australia PO Box 333, Archerfield Tel +61 7 3276 6054 Qld 4108, Australia Fax +61 7 3216 6591 Tel +61 7 3000 9148 Email
[email protected] Fax +61 7 3000 9130 Zoonoses account for 60% of emerging diseases spp.) as the natural reservoir of the virus in 1996 provided threatening humans. Wildlife are the origin of an the complex wildlife-livestock-human continuum illustrated increasing proportion of zoonoses over recent decades to by Daszak et al., 20005, and thus invited a cross-disciplinary a point where they now account for 75% of all zoonoses1. approach. A succession of equine incidents (some single cases, Concurrently and/or consequentially, there has been some involving horse to horse transmission) has occurred since an increasing recognition of the inter-connectedness 1994, several involving horse to human transmissions6 (Figure 1). of wildlife, livestock and human health, and increasing In 2012, the response to diagnosis of an equine case invokes momentum of an ecosystem-level approach (most a coordinated multi-agency threat abatement team approach. commonly termed One Health) to complex emerging Animal health authorities report a positive diagnosis to public disease scenarios2. This paper describes the evolution health, wildlife and workplace health and safety authorities. and application of such an approach to periodic Hendra There is cross-agency coordination not only at the policy and virus incidents in horses and humans in Australia.