Toxin - A poisonous substance, often a protein, produced by the metabolic processes of living cells or organisms that can cause disease if introduced into the body.⏎
Zoonoses - Any disease that can be transmitted from vertebrate animals to humans.⏎
Virus - An infectious agent that is only capable of replicating itself inside the living cells of other organisms.⏎
World Health Organization (WHO) - The directing and coordinating authority for health within the United Nations system, responsible for providing leadership on global health matters, shaping the health research agenda, setting norms and standards, articulating evidence-based policy options, providing technical support to countries and monitoring and assessing health trends.⏎
Suburbanization - The process of land conversion and development around the periphery of major cities.⏎