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.⏎
Sperm Cell - The male gamete, or sex cell, which carries the hereditary material of the male parent and unites with the female egg cell during sexual reproduction.⏎
Vector - An organism (usually an arthropod such as a flea, mosquito, or tick) that carries an infectious agent from one host to another.⏎
Sterilization - The process of destroying all forms of life, including infectious agents, from a surface, fluid, or biological medium with the use of heat, chemicals, irradiation, high pressure, filtration, or some combination of these methods.⏎
Symptom - A subjective indication of the presence of disease or a departure from the body’s normal state of functioning.⏎