date:Dec 17, 2013
identical animals. Strong biosecurity and health protection regimes generally prevent infectious disease problems, but major outbreaks occur occasionally when a pathogen performs a virulence jump, escapes the vaccine used, acquires resistance to antibiotics, or travels along the food chain.
The report also states, however, that disease emergence in livestock is not specific to large-scale, intensive systems.
Smallholder livestock systems - which tend to involve animals roaming freely over larg