Reservoir - An organism in which a parasite that is pathogenic for some other organism lives and reproduces without harming its host.⏎
Nerve Toxin - Also called neurotoxins, these refer to poisonous substances that cause damage to cells in the nervous system.⏎
Pathogen - A biological agent that causes disease.⏎
Respiratory Tract - The part of the anatomy that has to do with the passage of air and includes the nose, larynx, trachea, and lungs.⏎