Interferon: Any of a group of glycoproteins that help fight off viruses and make uninfected cells immune to that particular virus

Leukocyte: white blood cells that destroy foreign bodies in the body

Lymph nodes: small glands found around the body that produce cells that help fight off infections and antigens
Lymphadenopathy: A condition in which the lymph nodes become abnormally large, usually because of disease

Macular: discoloration of the skin that is indicative of a certain disease

Meningitis: a condition in which the meninges become inflamed, which is often caused by a viral or bacterial infection

Meningoencephalitis: a condition that is marked by the brain and meninges becoming inflamed

Morbilliform: a rash that is similar to that produced in measles

Mosquito bird cycle: cycle between two vectors of the virus, mosquitos and bird

Myalgia: a condition marked by muscle pain

Papular: a condition marked by small, solid, usually inflammatory, elevations of the skin that are similar to chicken pox

Pathogen: the specific cause of a disease, ie bateria or a virus

Pathogenesis: the knowledge of where a disease began and its developmental patterns

Perivascular: describing anything around the blood vessels