White Blood Cell - A special type of cell that works as part of the immune system to defend the body against disease and infection.⏎
Zoonoses - Any disease that can be transmitted from vertebrate animals to humans.⏎
Vaccine - A biological preparation that improves the immune system’s ability to recognize and destroy harmful infectious agents.⏎
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.⏎