Human health

Human health may be at risk from agricultural activities due to interaction with animals or through vector-borne diseases that affect both animals and humans. For example, chicken production in close proximity to household members may increase the risk of Newcastle disease virus, which can be transmitted to humans. 

Other livestock diseases can be transferred to humans, as can other contaminants such as those from fecal matter. Campylobacter bacteria from animal feces may be ingested by humans through contaminated food and may attack the humans' small and large intestines, causing chronic illness. In some cases, this contamination has been associated with stunting in children.