A pathogen is a disease-causing biological agent.
Some germs spread with personal contact. In 2373, Elias Giger refused to shake hands with Jake Sisko, as it might spread germs. (DS9: "In the Cards")
Icheb was genetically altered by the Brunali to carry a pathogen that was lethal to the Borg. (VOY: "Child's Play")
Types of pathogensEdit