: difficult in a way that is usually interesting or enjoyable. Thesaurus: All synonyms and antonyms for challenging Nglish: Translation of challenging for Spanish speakers Britannica English: Translation of challenging for Arabic speakers.
To illustrate the tremendous indirect impact of emerging zoonotic diseases on public health policy and structures and on public perception of health risks, the authors provide a number of examples, including that of the Ebola virus, avian influenza, monkeypox and bovine spongiform encephalopathy.
The One Health concept is a rapidly expanding global strategy to enhance human, animal and environmental health from an interdisciplinary perspective. 1  Broadly defined, One Health includes: 1  The science of emerging and re-emerging infectious and zoonotic diseases, such as HIV, SARS, West Nile virus, dengue, Rift Valley fever, influenza, ehrlichiosis, multidrug-resistant tuberculosis, and mycoplasmosis. 2  Food safety. 3  Environmental toxicology.